Cygnus Metals Limited (ASX: CY5; TSXV: CYG)
(“Cygnus” or the “Company”) refers to its announcement titled
“Cygnus increases highly prospective, under-explored ground
position by 50%” released to ASX on 9 January 2025 (“First
Announcement”) and its announcement titled “Cygnus’ first drill
hole returns up to 9.1% Cu outside Resource” released to ASX on 23
January 2025 (“Second Announcement”).
Clarifications regarding First
Announcement
In discussions with the Company subsequent to
the release of the First Announcement, the Australian Securities
Exchange (“ASX”) has requested the below:
-
Clarification regarding the assumptions used in the copper metal
equivalents calculations provided by Cygnus on the NI 43-101
compliant Foreign Mineral Resource Estimate for the Chibougamau
Project in the First Announcement; and
- Further
information regarding metallurgical test work completed to support
the Company’s metallurgical recovery assumptions provided in this
clarification announcement.
The Company wishes to provide further
information on these assumptions and the metallurgical test work
previously completed by Doré Copper Mining Corp (“Doré”), but
emphasises that the clarification does not affect the Foreign
Mineral Resource Estimate or the Copper Equivalent (“CuEq”) figures
as set out in Appendix A of the First Announcement and as
first disclosed by the Company on 15 October 2024.
Note 6 of Appendix A on page 6 of the First
Announcement is replaced with the following (“First
Clarification”):
“Metal equivalents for the foreign estimate have
been calculated at a copper price of US$8,750/t, gold price of
US$2,350/oz. Copper equivalent was calculated based on the formula
CuEq(%) = Cu(%) + (Au(g/t) x 0.77258). Metallurgical recovery
factors have been applied to the copper equivalents calculation,
with copper metallurgical recovery assumed at 95% and gold
metallurgical recovery assumed at 85% based upon historical
production at the Chibougamau Processing Facility and more recent
metallurgical test work. It is the Company’s view that all elements
in the copper equivalent calculations have a reasonable potential
to be recovered and sold.”
The Company confirms that the Foreign Mineral
Resource Estimate and metal equivalents calculation do not contain
any other metals, including silver. In fact, the inclusion of
silver represents a further opportunity for the Company and will be
reviewed in future work.
Other than the First Clarification above, there
are no changes to the First Announcement.
In support of the First Clarification, attached
to this announcement are the results of metallurgical test work
previously completed by Doré.
Clarifications regarding Second
Announcement
In discussions with the Company subsequent to
the release of the Second Announcement, the ASX has requested that
the Company provide further information regarding two of the three
electromagnetic (“EM”) plates referred to in Figures 1 and 2 of the
Second Announcement in accordance with ASX Listing Rules 5.6 and
5.7.
The Company wishes to note that the two
additional untested EM plates to the south of the new EM plate
referred to in the Second Announcement were identified from
geophysics programs conducted by previous owners of the Chibougamau
Project and provides the additional information set out in the
Appendix to this clarification announcement (“Second
Clarification”).
A fixed loop EM (“FLEM”) survey was conducted in
2007 by Crone Geophysics for Novawest Resources. Results from this
survey, which Southern Geoscience Consultants (“SGC”) has
reprocessed for Cygnus, highlighted a conductor to the south of the
Corner Bay deposit. A downhole EM (“DHEM”) survey was conducted by
Doré in 2021 on drillhole CB-21-93. The survey, which SGC has
reprocessed for Cygnus, highlighted a further conductor to the
south of the Corner Bay deposit.
Other than the Second Clarification, there are
no changes to the Second Announcement.
This announcement has been authorised for
release by the Board of Directors of Cygnus.
David SouthamManaging
DirectorT: +61 8 6118
1627E:
info@cygnusmetals.com |
Ernest MastPresident & Managing
DirectorT: +1 647 921
0501E:
info@cygnusmetals.com |
Media:Paul Armstrong Read
Corporate +61 8 9388 1474 |
About Cygnus Metals
Cygnus Metals Limited (ASX: CY5, TSXV: CYG) is a
diversified critical minerals exploration and development company
with projects in Quebec, Canada and Western Australia. The Company
is dedicated to advancing its Chibougamau Copper-Gold Project in
Quebec with an aggressive exploration program to drive resource
growth and develop a hub-and-spoke operation model with its
centralised processing facility. In addition, Cygnus has quality
lithium assets with significant exploration upside in the
world-class James Bay district in Quebec, and REE and base metal
projects in Western Australia. The Cygnus team has a proven track
record of turning exploration success into production enterprises
and creating shareholder value.
Qualified Persons and Compliance
Statements
The scientific and technical information
relating to metal equivalents in this news release has been
reviewed and approved by Ms Laurence Huss, the Quebec In-Country
Manager of Cygnus, a “qualified person” as defined in National
Instrument 43-101 – Standards of Disclosure for Mineral Projects.
The Company first announced the foreign estimate of mineralisation
for the Chibougamau Project on 15 October 2024. The Company
confirms that the supporting information included in the
announcement of 15 October 2024 continues to apply other than in
respect of the Clarification, and (notwithstanding the
Clarification) has not materially changed.
Cygnus confirms that (notwithstanding the
Clarification) it is not aware of any new information or data that
materially affects the information included in the original
announcement and that all material assumptions and technical
parameters underpinning the estimates in the original announcement
continue to apply and have not materially changed. Cygnus confirms
that it is not in possession of any new information or data that
materially impacts on the reliability of the estimates or Cygnus’
ability to verify the foreign estimates as mineral resources in
accordance with the JORC Code. The Company confirms that the form
and context in which the Competent Persons’ findings are presented
have not been materially modified from the original market
announcement.
The scientific and technical information
relating to exploration results in this news release has been
reviewed and approved by Mr Louis Beaupre, the Quebec Exploration
Manager of Cygnus, a “qualified person” as defined in National
Instrument 43-101 – Standards of Disclosure for Mineral Projects.
The Exploration Results disclosed in this announcement are based on
and fairly represent information and supporting documentation
compiled by Mr Beaupre. Mr Beaupre holds options in Cygnus. Mr
Beaupre is a member of the Ordre des ingenieurs du Quebec (P Eng),
a Registered Overseas Professional Organisation as defined in the
ASX Listing Rules, and has sufficient experience which is relevant
to the style of mineralisation and type of deposits under
consideration and to the activity which has been undertaken to
qualify as a Competent Person as defined in the 2012 Edition of the
“Australasian Code for Reporting of Exploration Results, Mineral
Resources and Ore Reserves”. Mr Beaupre consents to the inclusion
in this release of the matters based on the information in the form
and context in which they appear.
Neither TSX Venture Exchange nor its
Regulation Services Provider (as that term is defined in policies
of the TSX Venture Exchange) accepts responsibility for the
adequacy or accuracy of this release.
Appendix – Second
Clarification
Section 1 (Sampling Techniques and Data) and
Section 2 (Reporting of Exploration Results) of Appendix C (2012
JORC Table 1) of the Second Announcement are deleted and replaced
as follows:
Section 1 Sampling Techniques and Data
Criteria |
JORC Code explanation |
Commentary |
Sampling techniques |
Nature and quality of sampling (eg cut channels, random chips, or
specific specialised industry standard measurement tools
appropriate to the minerals under investigation, such as down hole
gamma sondes, or handheld XRF instruments, etc). These examples
should not be taken as limiting the broad meaning of sampling. |
- All current drilling
conducted at the Chibougamau Project was completed under the
supervision of a registered professional geologist as a Qualified
Person (QP) who is responsible and accountable for the planning,
execution, and supervision of all exploration activity as well as
the implementation of quality assurance programs and
reporting.
- All drilling
reported is NQ2 (47.8 mm diameter)
- DHEM surveys have
been completed on surface drillholes
- Historic FLEM
surveys were acquired from surface
- Historic FLEM
stations were planned along survey lines perpendicular to
geological strike
|
Include reference to measures taken to ensure sample representivity
and the appropriate calibration of any measurement tools or systems
used. |
- All sample
collection, core logging, and specific gravity determinations were
completed by Cygnus Metals under the supervision of a
professionally qualified registered geologist.
- NQ core was marked
for splitting during logging and is sawn using a diamond core saw
with a mounted jig to assure the core is cut lengthwise into equal
halves.
- Half of the cut core
is placed in clean individual plastic bags with the appropriate
sample tag.
- QA/QC is done in
house by Cygnus Metals geologists with oversight from the Senior
Geologist. The check samples (blanks and standards – 4% of total
samples with another 2% of core duplicates taken on half split
core) that were inserted into the sample batches are verified
against their certified values and are deemed a pass if they are
within 3 standard deviations of the certified value. The duplicates
are evaluated against each other to determine mineralization
distribution (nugget). If there are large discrepancies in the
check samples, then the entire batch is requested to be re-assayed.
The samples are then placed in bags for shipment to the offsite
laboratory’s facility.
- The remaining half
of the core is retained and incorporated into Cygnus’s secure, core
library located on the property
- No samples were
taken for the electromagnetic survey work.
|
Aspects of the determination of mineralisation that are Material to
the Public Report.In cases where ‘industry standard’ work has been
done this would be relatively simple (eg ‘reverse circulation
drilling was used to obtain 1 m samples from which 3 kg was
pulverised to produce a 30 g charge for fire assay’). In other
cases more explanation may be required, such as where there is
coarse gold that has inherent sampling problems. Unusual
commodities or mineralisation types (eg submarine nodules) may
warrant disclosure of detailed information. |
- Industry standard
sampling practices were used with sample lengths ranging from 0.3 m
to 1.0 m and respected geological contacts. Sample tags were placed
at the beginning of each sample interval and the tag numbers were
recorded in an MS Excel database.
- Sampling practice is
considered to be appropriate to the geology and style of
mineralisation
|
Drilling techniques |
Drill type (eg core, reverse circulation, open-hole hammer, rotary
air blast, auger, Bangka, sonic, etc) and details (eg core
diameter, triple or standard tube, depth of diamond tails,
face-sampling bit or other type, whether core is oriented and if
so, by what method, etc). |
- Diamond core was
drilled using surface diamond rigs with industry recognised
contractors Miikan Drilling. Miikan is a joint venture between
Chibougamau Diamond Drilling Ltd., the First Nations community of
Ouje-Bougoumou and the First Nations community of Mistissini both
located in the Eeyou Istchee territory.
- Drilling was
conducted using NQ core size
- Directional surveys
have been taken at 50m intervals
|
Drill sample recovery |
Method of recording and assessing core and chip sample recoveries
and results assessed.Measures taken to maximise sample recovery and
ensure representative nature of the samples.Whether a relationship
exists between sample recovery and grade and whether sample bias
may have occurred due to preferential loss/gain of fine/coarse
material. |
- Diamond core
recovery was measured for each run and calculated as a percentage
of the drilled interval.
- Overall, the core
recoveries are excellent in the Chibougamau area
- No drilling was
undertaken for the electromagnetic survey work.
|
Logging |
Whether core and chip samples have been geologically and
geotechnically logged to a level of detail to support appropriate
Mineral Resource estimation, mining studies and metallurgical
studies. |
- All core was
geologically and geotechnically logged. Lithology, veining,
alteration and mineralisation are recorded in multiple tables of
the drillhole database
- No logging was
undertaken for the electromagnetic survey work.
|
Whether logging is qualitative or quantitative in nature. Core (or
costean, channel, etc) photography. |
- Geological logging
of core is qualitative and descriptive in nature.
|
The total length and percentage of the relevant intersections
logged. |
- 100% of the core has
been logged
|
Sub-sampling techniques and sample preparation |
If core, whether cut or sawn and whether quarter, half or all core
taken.If non-core, whether riffled, tube sampled, rotary split, etc
and whether sampled wet or dry.For all sample types, the nature,
quality and appropriateness of the sample preparation
technique.Quality control procedures adopted for all sub-sampling
stages to maximise representivity of samples.Measures taken to
ensure that the sampling is representative of the in-situ material
collected, including for instance results for field
duplicate/second-half sampling.Whether sample sizes are appropriate
to the grain size of the material being sampled. |
- The NQ2 diameter the
core was sawn in half following a sample cutting line determined by
geologists during logging and submitted for analysis on nominal 1m
intervals or defined by geological boundaries determined by the
logging geologist
- Each core sample is
assigned a tag with a unique identifying number. Sample lengths are
typically one metre but can be depending on zone mineralogy and
boundaries.
- This sampling
technique is industry standard and deemed appropriate.
- No subsampling was
undertaken for the electromagnetic survey work.
|
Quality of assay data and laboratory tests |
The nature, quality and appropriateness of the assaying and
laboratory procedures used and whether the technique is considered
partial or total. |
- Sample (NQ size half
core) preparation and fire assay analysis were done at Bureau
Veritas Commodities Canada Ltd (“BV”) in Timmins, Ontario, and
ICP-ES multi-elements analysis was done at BV in Vancouver,
B.C.
- Samples were
weighed, dried, crushed to 70% passing 2 mm, split to
250 g, and pulverized to 85% passing 75 µm.
- Samples are fire
assayed for gold (Au) (30 g) and multi-acid digestion ICP-ES
finish, for 23 elements (including key elements Ag, Cu, Mo).
- Samples assaying
>10.0 g/t Au are re-analysed with a gravimetric finish using a
30 g charge. Samples assaying >10% Cu are re-analysed with a
sodium peroxide fusion with ICP-ES analysis using a 0.25 g
charge.
|
For geophysical tools, spectrometers, handheld XRF instruments,
etc, the parameters used in determining the analysis including
instrument make and model, reading times, calibrations factors
applied and their derivation, etc. |
- CY5 commissioned
Southern Geoscience Consultants (SGC) of Perth to supervise and
plan the recent DHEM surveys that were acquired by Géophysique
TMC
- SGC were also
commissioned to reinterpret some DHEM collected by Géophysique TMC
from 2021
- Survey Details for
DHEM
- Survey
Configuration: Downhole TEM (DHTEM)
- TX Loop Size: 620 x
450m
- Transmitter: Crone
Geophysics Pulse Transmitter
- Receiver: Crone
Geophysics Pulse Receiver
- Sensor: Crone
Geophysics 3 component dB/dt induction coil
- Component
Directions: Axial (A), and cross-hole (U and V)
- Station Spacing: 10m
with 5m infill
- TX Frequency: 5
Hz
- Duty cycle: 50%
- Current: 20
Amps
- Powerline Frequency:
60 Hz
- Base frequency: 50
msec
- Stacks: 256 stacks
per reading
- CY5 also
commissioned SGC to reprocess the historic FLEM that was conducted
in 2007 under the supervision of Crone Geophysics and Exploration
Ltd
- The equipment used
on this project was a Crone Pulse EM Surface system. This includes
a 4.8kW transmitter with a 240V voltage regulator powered by an 11
hp motor generator. The Crone Digital Receiver was used to collect
the field data. The synchronization between the Transmitter and the
Receiver was maintained by crystal clock synchronization for
surface work
- TX Loop Size: 900 x
800m
- Ramp Time:
1.5ms
- Current: 15
amps
- Time Base: 16.66
msec
|
Nature of quality control procedures adopted (eg standards, blanks,
duplicates, external laboratory checks) and whether acceptable
levels of accuracy (i.e. lack of bias) and precision have been
established. |
- Laboratory QC
procedures involve the use of internal certified reference material
as assay standards, along with blanks, duplicates and
replicates
- Geophysical data was
recorded on a Crone Geophysics Pulse Receiver then emailed to SGC
for analysis and verification
|
Verification of sampling and assaying |
The verification of significant intersections by either independent
or alternative company personnel. |
- Verification of
sampling was made by Cygnus Metals and other professional
consultant geologists
- No sampling was
undertaken for the electromagnetic survey work.
|
The use of twinned holes. |
|
Documentation of primary data, data entry procedures, data
verification, data storage (physical and electronic)
protocols. |
- All logging data was
completed, core marked up, logging and sampling data was entered
directly into the database.
- The logged data is
stored on the site server directly.
|
Discuss any adjustment to assay data. |
- There was no
adjustment to the assay data
|
Location of data points |
Accuracy and quality of surveys used to locate drill holes (collar
and down-hole surveys), trenches, mine workings and other locations
used in Mineral Resource estimation. |
- The location of the
drillholes and the aiming points for the orientation of the
drillholes were indicated on the ground using identified stakes.
The stakes marking the location of the drillholes were set up and
located with a Garmin GPS model “GPSmap 62s” (4m accuracy)
- Surveys are
collected using a Reflex EZ-Shot® single-shot electronic instrument
with readings collected at intervals of approximately every 30 m
downhole plus a reading at the bottom of the hole
- Surface geophysical
measurement locations were determined using a hand-held GPS. The
accuracy of this unit at most sample sites was +/- 3m to 5m
- The DHEM station
positions are estimated using a winch counter that measures to the
nearest cm accuracy with gyro survey files to accurately locate the
survey stations in space.
- FLEM stations were
planned perpendicular to geological strike, and all were surveyed
with hand-held GPS
|
Specification of the grid system used. |
- The grid system used
is UTM NAD83 (Zone 18)
|
Quality and adequacy of topographic control. |
- A Digital Terrane
Model (DTM) has been used to accurately plot the vertical position
of the holes
|
Data spacing and distribution |
Data spacing for reporting of Exploration Results. |
- The drill spacing is
considered appropriate for this type of exploration
- DHEM is 10m stations
with 5m and 1m infill and FLEM data is 100m station spacing
- The station spacings
are considered to be sufficient for sampling the anomalous response
for detailed quantitative modelling
|
Whether the data spacing and distribution is sufficient to
establish the degree of geological and grade continuity appropriate
for the Mineral Resource and Ore Reserve estimation procedure(s)
and classifications applied. |
- No resource
estimation is made
|
Whether sample compositing has been applied. |
- No sample
compositing has been applied
|
Orientation of data in relation to geological structure |
Whether the orientation of sampling achieves unbiased sampling of
possible structures and the extent to which this is known,
considering the deposit type. |
- Drilling is
orientated approximately at right angles to the currently
interpreted strike of the known interpreted mineralisation.
Reported intersections appear close to true width
- FLEM stations were
planned perpendicular to geological strike
- DHEM surveys records
3D data and target orientation relative to the survey orientation
is not deemed to be important in the modelling
|
If the relationship between the drilling orientation and the
orientation of key mineralised structures is considered to have
introduced a sampling bias, this should be assessed and reported if
material. |
- No bias is
considered to have been introduced by the existing sampling
orientation
|
Sample security |
The measures taken to ensure sample security. |
- Core was placed in
wooden core boxes close to the drill rig by the drilling
contractor. The core was collected daily by the drilling contractor
and delivered to the secure core logging facility. Access to the
core logging facility is limited to Cygnus employees or
designates
|
Audits or reviews |
The results of any audits or reviews of sampling techniques and
data. |
- No audits have been
undertaken, therefore information on audits or reviews is not yet
available
|
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this
section.)
Criteria |
JORC Code Explanation |
Commentary |
Mineral tenement and land tenure status |
Type, reference name/number, location and ownership including
agreements or material issues with third parties such as joint
ventures, partnerships, overriding royalties, native title
interests, historical sites, wilderness or national park and
environmental settings. |
- The data reported
within this announcement is from the Chibougamau Project. The
Chibougamau project consists of 3 properties which includes:
- Copper Rand (1
mining license, 19 mining concession and 147 exploration
claims)
- Corner Bay – Devlin
(1 mining license, 111 exploration claims)
- Joe Mann (2 mining
concessions, 74 exploration claims)
- Copper Rand and
Corner Bay – Devlin are held 100% by CBAY minerals Inc, a wholly
owned subsidiary of Dore Copper.
- 767ha of the Joe
Mann property is held by CBAY with the remaining 1965ha held under
option agreement with Resources Jessie.
- The properties
collectively making up the Project are in good standing based on
the Ministry of Energy and Natural Resources (Ministère de
l’Énergie et des Ressources Naturelles) GESTIM claim management
system of the Government of Québec.
|
The security of the tenure held at the time of reporting along with
any known impediments to obtaining a licence to operate in the
area. |
- All tenure is in
good standing
|
Exploration done by other parties |
Acknowledgment and appraisal of exploration by other parties. |
- The Chibougamau
Copper and Gold project comprising Corner Bay, Devlin, Cedar Bay
and Joe Mann have seen an extensive exploration history dating back
to the early 1900s. The PEA (as referred to in the Company’s
announcement of 15 October 2024) provides a detailed history of the
exploration activities undertaken by previous explorers.
- Corner Bay was first
identified as a prospect in 1956
- 1956 – 1972 eight
drilling programs totalling 1,463 m and various geophysical and
electromagnetic (EM) surveys
- 1973 – 1981 Riocanex
and Flanagan McAdam: ground geophysical surveys and 43 diamond
drill holes
- 1982 – 1984 Riocanex
and Corner Bay Exploration: 38 drill holes and metallurgical test
work
- 1988 – 1991 Corner
Bay Exploration: diamond drilling, geophysical surveys and
geological characterisation with initial MRE
- 1992 – 1994 SOQUEM
optioned and acquired a 30% interest, and completed diamond
drilling
- 1994 Explorations
Cache Inc and Ressources MSV Inc: diamond drilling
- 2004 – 2006 GéoNova
and MSV: 98 diamond drill holes and first Technical Report on the
Corner Bay project reporting a MRE
- 2007 – 2009
Campbell: diamond drilling and bulk sample
- 2012 - 2019 CBAY /
AmAuCu: diamond drilling and MRE
- Devlin identified in
1972 by airborne survey flown by the MERN
- 1979 – 1981 diamond
drilling, geophysical surveys
- 1981 development
commenced
- Joe Mann identified
in 1950 with the commencement of mining activities occurring in
1956
- The Joe Mann mine
operated underground during three different periods from 1956 to
2007
- In July 2012,
Ressources Jessie acquired the Joe Mann mine property, but
conducted only surface exploration work
- Cedar Bay was
discovered prior to 1927 by Chibougamau McKenzie Mines Ltd
- From initial
discovery to 2013 various surface and underground drilling
campaigns and geophysical surveys undertaken by various
companies
|
Geology |
Deposit type, geological setting and style of mineralisation. |
- Corner Bay and
Devlin are located at the northeastern extremity of the Abitibi
subprovince in the Superior province of the Canadian Shield and are
examples of Chibougamau-type copper-gold deposits. The Abitibi
subprovince is considered as one of the largest and best-preserved
greenstone belts in the world and hosts numerous gold and base
metal deposits.
- The Corner Bay
deposit is located on the southern flank of the Doré Lake Complex
(DLC). It is hosted by a N 15° trending shear zone more or less
continuous with a strong 75° to 85° dip towards the west. The host
anorthosite rock is sheared and sericitized over widths of 2 m to
25 m. The deposit is cut by a diabase dyke and is limited to the
north by a fault structure and to the south by the LaChib
deformation zone.
- The Corner Bay
deposit consists of three main mineralized lodes (subparallel Main
Lode 1 and Main Lode 2 above the dyke, and Main Lode below the dyke
that make up the bulk of the deposit. The Corner Bay deposit has
been traced over a strike length to over 1,100 m to a depth of
1,350 m and remains open at depth.
- The mineralization
is characterized by veins and/or lenses of massive to semi-massive
sulphides associated with a brecciated to locally massive
quartz-calcite material. The sulphide assemblage is composed of
chalcopyrite, pyrite, and pyrrhotite with lesser amounts of
molybdenite and sphalerite. Late remobilized
quartz-chalcopyrite-pyrite veins occur in a wide halo around the
main mineralization zones.
- Devlin is a
flat-lying, copper-rich lodes-hosted deposit in a polygenic igneous
breccia that is less than 100 m from the surface. The tabular
bodies have been modelled as four nearly horizontal lodes: a more
continuous lower zone and three smaller lodes comprising the upper
zone. Mineralization is reflected as a fracture zone often composed
of two or more sulphide-quartz lodes and stringers. Thickness of
the mineralized zones range from 0.5 m to 4.4 m. It has been
diluted during modelling to reflect a minimum mining height of 1.8
m.
- The Joe Mann deposit
is characterized by east-west striking shear hosted lodes that
extend beyond 1,000 m vertically with mineralization identified
over a 3 km strike length. These shear zones form part of the
Opawica-Guercheville deformation zone, a major deformation corridor
cutting the mafic volcanic rocks of the Obatogamau Formation in the
north part of the Caopatina Segment. The gabbro sill hosts the Main
Zone and the West Zone at the mine, while the South Zone is found
in the rhyolite. These three subvertical E-W (N275°/85°)
ductile-brittle shear zones are sub-parallel to stratigraphy and to
one another, with up to 140 m to 170 m of separation between them.
These shear zones are hosted within a stratigraphic package
composed of iron-magnesium (Fe-Mg) carbonate and sericite altered
gabbro sills, sheared basalts, and intermediate to felsic tuffs
intruded by various felsic intrusions. The Joe Mann gold
mineralization is hosted by decimetre scale quartz-carbonate lodes
(Dion and Guha 1988). The lodes are mineralized with pyrite,
pyrrhotite, and chalcopyrite disposed in lens and lodelets parallel
to schistosity, and occasionally visible gold. There are some other
minor, mineralized structures, e.g., North and South-South Zones,
with limited vertical and horizontal extensions.
|
Drill hole Information |
A summary of all information material to the understanding of the
exploration results including a tabulation of the following
information for all Material drill holes:
- easting and northing of the drill hole collar
- elevation or RL (Reduced Level – elevation above sea level in
metres) of the drill hole collar
- dip and azimuth of the hole
- down hole length and interception depth
- hole length.
If the exclusion of this information is justified on the basis that
the information is not Material and this exclusion does not detract
from the understanding of the report, the Competent Person should
clearly explain why this is the case. |
- All requisite
drillhole information is tabulated elsewhere in this release. Refer
Appendix A of the body text.
- The location of the
DHEM and FLEM is set out in “Diagram” below.
|
Data aggregation methods |
In reporting Exploration Results, weighting averaging techniques,
maximum and/or minimum grade truncations (eg cutting of high
grades) and cut-off grades are usually Material and should be
stated. |
- All drill hole
intersections are reported above a lower cut-off grade of 0.5%
copper.
|
Where aggregate intercepts incorporate short lengths of high-grade
results and longer lengths of low-grade results, the procedure used
for such aggregation should be stated and some typical examples of
such aggregations should be shown in detail. |
- A maximum of 1m
internal waste was allowed
|
The assumptions used for any reporting of metal equivalent values
should be clearly stated. |
- No metal equivalents
reported
|
Relationship between mineralisation widths and intercept
lengths |
These relationships are particularly important in the reporting of
Exploration Results.If the geometry of the mineralisation with
respect to the drill hole angle is known, its nature should be
reported.If it is not known and only the down hole lengths are
reported, there should be a clear statement to this effect (eg
‘down hole length, true width not known’). |
- All intersections
reported in the body of this release are down hole.
- The majority of the
drill holes in the database are drilled as close to orthogonal to
the plane of the mineralized lodes as possible.
- Only down hole
lengths are reported.
|
Diagrams |
Appropriate maps and sections (with scales) and tabulations of
intercepts should be included for any significant discovery being
reported These should include, but not be limited to a plan view of
drill hole collar locations and appropriate sectional views. |
- For Drill Results
included elsewhere in this release refer figures in the body
text
- Image 1 below shows
DHEM loop on CB-24-100
- Image 2 below shows
DHEM loop on CB-21-93 (red outline illustrates the EM loop and
white line the location of drillhole CB-21-93)
- Image 3 below
illustrating loop and planned survey lines from 2007 FLEM (blues
lines illustrate the planned survey lines for the anomaly outlined
in the announcement)
|
Balanced reporting |
Where comprehensive reporting of all Exploration Results is not
practicable, representative reporting of both low and high grades
and/or widths should be practiced to avoid misleading reporting of
Exploration Results. |
- All results greater
than 0.5% Cu and 0.5g/t Au have been reported at greater than 1m
width
|
Other substantive exploration data |
Other exploration data, if meaningful and material, should be
reported including (but not limited to): geological observations;
geophysical survey results; geochemical survey results; bulk
samples – size and method of treatment; metallurgical test results;
bulk density, groundwater, geotechnical and rock characteristics;
potential deleterious or contaminating substances. |
- Appropriate plans
are included in the body of this release.
|
Further work |
The nature and scale of planned further work (eg tests for lateral
extensions or depth extensions or large-scale step-out
drilling).Diagrams clearly highlighting the areas of possible
extensions, including the main geological interpretations and
future drilling areas, provided this information is not
commercially sensitive. |
- The Company will be
conducting drill testing of additional mineralisation as well as
step out drilling of existing lodes to further enhance the
resources quoted in this release. More information is presented in
the body of this report.
- Diagrams in the main
body of this release show areas of possible resource extension on
existing lodes. The company continues to identify and assess
multiple other target areas within the property boundary for
additional resources.
|
Image 1 below shows DHEM loop on CB-24-100
Image 2 below shows DHEM loop on CB-21-93 (red outline
illustrates the EM loop and white line the location of drillhole
CB-21-93)
Image 3 below illustrating loop and planned survey lines from
2007 FLEM (blues lines illustrate the planned survey lines for the
anomaly outlined in the announcement)
Chibougamau Copper-Gold Project,
Canada
Flotation copper recoveries of
up to 98.2% at Corner Bay
Metallurgical test work conducted at the
Chibougamau Project indicates a high-quality clean concentrate with
low impurities from the Corner Bay flagship asset
HIGHLIGHTS:
-
Metallurgical test work at Corner Bay
demonstrates:
-
Copper recoveries of 98.2% and 96.8% from a sample from an
ore sorting test
-
High-quality copper concentrate grades results of 27.0% and
29.6%
-
Clean concentrate with minimal deleterious
elements
-
Corner Bay is the flagship asset at the Chibougamau Project
with an Indicated Mineral Resources of 2.7Mt at 2.9% CuEq and
Inferred Mineral Resources of 5.9Mt at 3.6%
CuEq1
-
Metallurgical test work is being conducted as part of the
ongoing study work at the Chibougamau Project
-
Test work includes locked cycle flotation tests that
approximate a future flowsheet
-
The Chibougamau Project has excellent infrastructure with a
900,000tpa processing facility, local mining town, sealed highway,
airport, regional rail infrastructure and 25kV hydro power to the
processing site.
________________1 The Mineral Resource Estimate
at the Chibougamau Project is a foreign estimate prepared in
accordance with CIM Standards. A competent person has not done
sufficient work to classify the foreign estimate as a mineral
resource in accordance with the JORC Code, and it is uncertain
whether further evaluation and exploration will result in an
estimate reportable under the JORC Code.
Cygnus Executive Chairman, David Southam said: “The results
demonstrate the viability of the project as we continue along our
dual track exploration and development pathway with high recoveries
and a clean high grade concentrate”. |
Cygnus Metals Limited (ASX: CY5; TSXV: CYG)
(“Cygnus” or the “Company”) is pleased to announce positive
flotation test results at its flagship Corner Bay deposit within
the Chibougamau Copper-Gold Project in Quebec, Canada.
The results have been released in connection
with a response to a query from ASX concerning the basis on which
Cygnus announced metal equivalent grades in an announcement dated 9
January 2025, which referred to its NI 43-101 compliant Foreign
Mineral Resource Estimate for the Chibougamau Project
(“Announcement”). The results of the metallurgical test program
contained in this announcement have been considered by the Company
in informing the metallurgical recovery rates contained in the
Announcement and subsequent clarification announcement dated 28
January 2025. When Cygnus first disclosed the acquisition of Doré
Copper Mining Corp on 15 October 2024, it did not consider that the
metallurgical test-work was a material exploration result.
Following queries from ASX, the Company has considered that the
metallurgical test work contained in this announcement is
information that is necessary to support the assumptions made about
metal recoveries in Cygnus’ copper equivalent statement in the
Announcement.
This metallurgical test program conducted by
Doré Copper Mining Corp. in 2023 was part of work designed to
support ongoing study work at the Chibougamau Project.
The results demonstrate copper recoveries of
98.2% and 96.8% from a representative composite sample and
high-quality copper concentrate grades results of 27.0% and
29.6%.
These results were previously released by Doré
Copper Mining Corporation on October 30, 2023.
Latest Metallurgical Test Work Program
Summary
Base Metallurgical Laboratories in Kamloops,
British Columbia was commissioned to complete Corner Bay
metallurgical development and locked cycle flotation testing in
support of ongoing study work.
A total of 34 diamond drill core were used to
create a spatially diverse composite sample that intersected copper
mineralized zones within the Corner Bay Foreign Mineral Resource
Estimate. The core material selected represented different rock
types: semi and massive sulphides, quartz veins, diorite dyke, and
fresh and altered anorthosite (refer to Figures 1 and 2 in Appendix
C). The drill core was sampled by cutting a quarter split NQ core.
The longer pieces of quarter split core were further manually
broken down into 1 to 3 inches length to simulate a crushed
product. The composite sample weighted 202 kg and graded 2.20% Cu
and included an 18% external mining dilution from the hanging wall
and foot wall of the mineralized interval.
The composite sample was then processed through
the Steinert ore sorter and mixed with 26% of the unsorted
underflow by-passed mineralized material to represent an overall
sorted pre-concentrate mineralized material product (refer to
Figure 4 in Appendix C). The composite resulted in a 123 kilogram
sample with a grade of 3.31% Cu.
The resulting composite sample was evaluated
through lock cycle tests to determine the flotation metallurgical
performance (refer to Figure 4 in Appendix C). The sample was
prepared to a nominal grind size of 140 microns K80 in the rougher
testing and then processed through a regrind size of approximately
37 microns K80 in the cleaner tests.
The sample responded consistently throughout the
test work with excellent performance to conventional flotation
processing methods and reagents. Two locked cycle tests were
completed with varying retention times to determine the concentrate
grade versus recovery. The tests resulted in concentrate grades of
27.0% Cu and 29.6% Cu and recoveries 98.2% and 96.8%, respectively
(refer to Table 1 below).
Minimal amounts of deleterious elements (e.g.
arsenic, antimony, bismuth, cadmium etc.) were present in the
concentrate, indicative of the “clean” nature of the concentrate
(refer to Table 2 below). These results showed the highly
commercial quality of the concentrate in terms of salability and
payment terms of smelters.
Composite / Test |
Lock cycle test feed |
Concentrate |
Recovery |
CBSP (sorted mineralized material) |
Cu % |
Au g/t |
Ag g/t |
Cu % |
Au g/t |
Ag g/t |
Cu % |
Au % |
Ag % |
Lock Cycle Test 1 |
3.31 |
0.30 |
9 |
27 |
1.82 |
68 |
98.2 |
72.1 |
86.4 |
Lock Cycle Test 2 |
3.28 |
0.55 |
10 |
29.6 |
3.24 |
72 |
96.8 |
62.6 |
76.9 |
Table 1. Corner Bay Metallurgical Test Work
Results
Composite / Test |
Impurity Elements (ppm) |
CBSP (sortedmineralized
material) |
Arsenic(As) |
Antimony(Sb) |
Bismuth(Bi) |
Cadmium(Cd) |
Lead(Pb) |
Mercury(Hg) |
Zinc(Zn) |
Lock Cycle Test 1 |
22 |
3 |
4 |
10 |
102 |
1 |
735 |
Lock Cycle Test 2 |
10 |
3 |
3 |
10 |
88 |
1 |
777 |
Table 2. Corner Bay Impurity Element Content of
Copper Concentrate
Other Metallurgical Test
work
Other metallurgical recovery figures from the
Company’s Chibougamau Project deposits are the following:
Chibougamau Project Deposit |
Recovery Cu % |
Recovery Au % |
Metallurgical Testing / Processing |
Devlin1 |
95.5 |
72.5 |
1. 2021 flotation/locked cycle tests at SGS Canada Inc. mineral
processing facility in Quebec City, Quebec. Composite sample from 3
HQ drill cores.22. 2022 ore sorting test program at Corem mineral
processing facility in Quebec City, Quebec. Composite sample from 4
HQ drill cores.3 |
Cedar Bay |
91 |
87 |
Production data prior to 1987.4 |
Joe Mann |
94.6 |
83.6 |
Production data from 2005-2007, prior to closure of mine. |
Notes:
-
The Foreign Mineral Resource Estimate at the Devlin Project has the
lowest gold concentration in the Chibougamau camp and therefore its
contribution to recovered gold in the copper equivalent calculation
is minimal.
-
The tests were conducted on a composite sample from three HQ holes
drilled from the same drill pad. The composite assay indicated a
grade of 1.70% Cu and 0.12g/t Au. The purpose of the gravity test
was to evaluate the amenability of the material to gravity
separation. A 14kg sample was ground to a P80 of approximately 200
μm prior to being fed to a Knelson concentrator at a rate of
approximately 75 kg/h. The water flowrate was set at 3.5 L/min and
the rotation speed was 60 G. The gold recovery was low at 11.6%.
The tailings of the gravity separation test were used to perform
flotation tests. A total of four flotation tests and one locked
cycle test were performed. Ahead of each flotation test, a 2kg
sample was ground to a P80 of approximately 125 µm. The results of
each test were analysed, and Test 4 was identified as showing the
best metallurgical performance with a copper grade of 28.3% and
recovery of 90.8%. However, the gold recovery was low at 51.7% and
the gold grade was less than 10g/t. Therefore, a locked cycle test
was carried out to assess the stability of the Test 4 conditions.
Six 1kg charges of minus 10 mesh (-2 mm) were used for the locked
cycle test. The locked cycle tests yielded a concentrate grade at
20.5% Cu with 98.2% recovery and a gold recovery of 74.6%. Refer to
Figures 3 and 5 in Appendix C.
-
A sorting test was done on a crush sample of 3/4“ nominal size
taken from four HQ drill ½ cores drilled in 2022 (all four holes
drilled from the same pad) and material from three ½ HQ drill cores
left from the 2021 metallurgical test work. The test results showed
that particles of interest could be efficiently separated from the
gangue. An overall copper recovery of 97.2% was achieved with an
upgraded copper content from 2.95% to 4.82% Cu after three passes
of sorting. Refer to Figures 3 and 5 in Appendix C.
-
Internal company report of Campbell Resources dated 10 September
1987 and titled “Cedar Bay Shaft Deepening Project”.
This announcement has been authorised for
release by the Board of Directors of Cygnus.
David
SouthamExecutive ChairT: +61 8
6118 1627E:
info@cygnusmetals.com |
Ernest
MastPresident & Managing
DirectorT: +1 647 921
0501E:
info@cygnusmetals.com |
Media:
Paul Armstrong Read Corporate
T: +61 8 9388 1474 |
About Cygnus Metals
Cygnus Metals Limited (ASX: CY5, TSXV: CYG) is a
diversified critical minerals exploration and development company
with projects in Quebec, Canada and Western Australia. The Company
is dedicated to advancing its Chibougamau Copper-Gold Project in
Quebec with an aggressive exploration program to drive resource
growth and develop a hub-and-spoke operation model with its
centralised processing facility. In addition, Cygnus has quality
lithium assets with significant exploration upside in the
world-class James Bay district in Quebec, and REE and base metal
projects in Western Australia. The Cygnus team has a proven track
record of turning exploration success into production enterprises
and creating shareholder value.
Forward Looking Statements
This document contains “forward-looking
information” and “forward-looking statements” which are based on
the assumptions, estimates, analysis and opinions of management
made in light of its experience and its perception of trends,
current conditions and expected developments, as well as other
factors that management of Cygnus believes to be relevant and
reasonable in the circumstances at the date that such statements
are made, but which may prove to be incorrect. Forward-looking
statements include statements that are predictive in nature, depend
upon or refer to future events or conditions, or include words such
as ‘expects’, ‘anticipates’, ‘plans’, ‘believes’, ‘estimates’,
‘seeks’, ‘intends’, ‘targets’, ‘projects’, ‘forecasts’, or negative
versions thereof and other similar expressions, or future or
conditional verbs such as ‘may’, ‘will’, ‘should’, ‘would’ and
‘could’. Although Cygnus and its management believe that the
assumptions and expectations represented by such information are
reasonable, there can be no assurance that the forward-looking
information will prove to be accurate. Forward-looking information
involves known and unknown risks, uncertainties, and other factors
which may cause the actual results, performance or achievements of
Cygnus to be materially different from any anticipated future
results, performance or achievements expressed or implied by such
forward-looking information. Such factors include, among others,
the actual results of current or future exploration, changes in
project parameters as plans continue to be evaluated, changes in
laws, regulations and practices, the geopolitical, economic,
permitting and legal climate that Cygnus operates in, as well as
those factors disclosed in Cygnus’ publicly filed documents. No
representation or warranty is made as to the accuracy, completeness
or reliability of the information, and readers should not place
undue reliance on forward-looking information or rely on this
document as a recommendation or forecast by Cygnus. Cygnus does not
undertake to update any forward-looking information, except in
accordance with applicable securities laws.
End Notes
-
The Mineral Resource estimate at the Chibougamau Project is a
foreign estimate prepared in accordance with CIM Standards. A
competent person has not done sufficient work to classify the
foreign estimate as a mineral resource in accordance with the JORC
Code, and it is uncertain whether further evaluation and
exploration will result in an estimate reportable under the JORC
Code. Refer to Appendix B for a breakdown of the Mineral Resource
Estimate.
Competent Persons, Qualified Persons and
Compliance Statements
The Exploration Results, scientific and
technical information, including metallurgical test results,
contained in this news release is based on and fairly represents
information and supporting documentation compiled by Mr Ernest
Mast, the Managing Director and President of Cygnus, a “qualified
person” as defined in National Instrument 43-101 – Standards of
Disclosure for Mineral Projects. Mr Mast holds shares and options
in Cygnus. Mr Mast is a member of Ordre des ingenieurs du Quebec (P
Eng), a Registered Overseas Professional Organisation as defined in
the ASX Listing Rules, and has sufficient experience which is
relevant to the style of mineralisation and type of deposits under
consideration and to the activity which has been undertaken to
qualify as a Competent Person as defined in the 2012 Edition of the
“Australasian Code for Reporting of Exploration Results, Mineral
Resources and Ore Reserves”. The qualified person has provided his
consent to be named in this announcement and consents to the form
and context in which the scientific and technical information,
including metallurgical test results has been presented in this
market announcement.
The Company first announced the foreign estimate
of mineralisation for the Chibougamau Project on 15 October
2024. The Company confirms that the supporting information included
in the announcement of 15 October 2024 continues to apply and
has not materially changed, notwithstanding the clarification
announcement released by Cygnus on 28 January 2025
(“Clarification”). Cygnus confirms that (notwithstanding the
Clarification) it is not aware of any new information or data that
materially affects the information included in the original
announcement and that all material assumptions and technical
parameters underpinning the estimates in the original announcement
continue to apply and have not materially changed. Cygnus confirms
that its is not in possession of any new information or data that
materially impacts on the reliability of the estimates or Cygnus’
ability to verify the foreign estimates as mineral resources in
accordance with the JORC Code. The Company confirms that the form
and context in which the Competent Persons’ findings are presented
have not been materially modified from the original market
announcement.
Metal equivalents for the foreign estimate have
been calculated at a copper price of US$8,750/t, gold price of
US$2,350/oz, copper equivalents calculated based on the formula
CuEq (%) = Cu(%) + (Au (g/t) x 0.77258). Metallurgical recovery
factors have been applied to the copper equivalents calculations,
with copper metallurgical recovery assumed at 95% and gold
metallurgical recovery assumed at 85% based upon historical
production at the Chibougamau Processing Facility, and the
metallurgical results contained in this announcement. It is the
Company’s view that all elements in the copper equivalent
calculations have a reasonable potential to be recovered and
sold.
Neither TSX Venture Exchange nor its Regulation
Services Provider (as that term is defined in policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
APPENDIX A – Drill Hole Location and
Sampling Intervals for the Significant Intersections and for the
Metallurgical Test Work
Coordinates given in UTM NAD83 (Zone 18).
Corner Bay Metallurgical Test
Work
A total of 34 diamond drill core were used for
the Corner Bay composite sample. The table shows the sampling
interval for each hole collected for the composite sample (sample
type: Metallurgy) and the significant intersection obtained through
assaying the sample (sample type: Assay). N/A means Not Applicable
and na means Not Assayed.
Hole ID |
X |
Y |
Z |
Azi |
Dip |
Depth (m) |
Sample Type |
From (m) |
To (m) |
Interval (m) |
Cu % |
Au (g/t) |
Ag (g/t) |
Mo (ppm) |
CB-18-03 |
554555 |
5510226 |
380 |
121.1 |
-71.6 |
912.0 |
Metallurgy |
849.5 |
854.6 |
5.1 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
850.0 |
854.15 |
4.15 |
4.29 |
0.13 |
14.6 |
na |
CB-18-05 |
544550 |
5510181 |
380 |
125.5 |
-75.9 |
1,092.0 |
Metallurgy |
1,022.3 |
1,030.3 |
8.0 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,023.0 |
1029.6 |
6.55 |
4.11 |
0.14 |
8.8 |
na |
CB-18-06 |
554555 |
5510181 |
380 |
125.9 |
-74.9 |
987.0 |
Metallurgy |
948.2 |
963.2 |
15.0 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
949.5 |
961.8 |
12.3 |
2.33 |
0.12 |
5.5 |
na |
CB-18-07 |
554555 |
5510181 |
380 |
126.2 |
-72.8 |
897.7 |
Metallurgy |
851.6 |
867.9 |
16.2 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
853.1 |
866.4 |
13.3 |
3.45 |
0.29 |
12.1 |
na |
CB-19-11 |
554556 |
5510227 |
380 |
97 |
-60 |
1011.0 |
Metallurgy |
757.1 |
759.2 |
2.1 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
781.2 |
781.7 |
0.5 |
6.16 |
0.43 |
30.0 |
na |
CB-20-13 |
554259 |
5510036 |
383 |
97 |
-56 |
945.0 |
Metallurgy |
862.4 |
863.2 |
0.7 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
862.5 |
863.1 |
0.6 |
1.89 |
0.10 |
4.0 |
na |
|
|
|
|
|
|
|
Metallurgy |
907.1 |
910.4 |
3.3 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
907.4 |
910.1 |
2.7 |
1.40 |
0.05 |
7.3 |
na |
CB-20-15 |
554236 |
5509858 |
382 |
77 |
-66 |
1,200.0 |
Metallurgy |
1,065.3 |
1,074.4 |
9.1 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,066.15 |
1,073.6 |
7.45 |
2.38 |
0.12 |
4.2 |
na |
|
|
|
|
|
|
|
Assay |
1,068.95 |
1,072.6 |
3.65 |
3.65 |
0.18 |
6.2 |
na |
CB-20-16W1 |
554259 |
5510036 |
383 |
87 |
-71 |
1,230.0 |
Metallurgy |
1,156.6 |
1,159.7 |
4.0 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,156.0 |
1,158.3 |
3.3 |
1.94 |
0.13 |
4.5 |
na |
CB-20-18 |
554236 |
5509858 |
382 |
90 |
-66 |
1,049.9 |
Metallurgy |
1,021.2 |
1,028.9 |
7.7 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,021.9 |
1,028.2 |
6.30 |
3.03 |
0.11 |
6.6 |
na |
CB-20-19 |
554236 |
5509858 |
382 |
84 |
-70 |
1,185.0 |
Metallurgy |
1,160.0 |
1,167.9 |
7.9 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,160.75 |
1,167.2 |
6.45 |
4.06 |
0.38 |
13.2 |
na |
|
|
|
|
|
|
|
Assay |
1,164.85 |
1,167.2 |
2.35 |
6.10 |
0.74 |
15.3 |
na |
CB-21-25 |
554572 |
5510607 |
378 |
112 |
-56 |
798.0 |
Assay |
634.4 |
640.4 |
6.0 |
1.75 |
0.09 |
5.4 |
na |
|
|
|
|
|
|
|
Assay |
636.2 |
640.4 |
4.2 |
2.13 |
0.11 |
6.7 |
na |
|
|
|
|
|
|
|
Metallurgy |
766.6 |
767.6 |
1.0 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
766.65 |
767.5 |
0.85 |
0.48 |
0.04 |
4.7 |
na |
CB-21-28 |
554199 |
5509800 |
383 |
89 |
-69 |
1,164.0 |
Metallurgy |
1,146.3 |
1,150.8 |
4.5 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,146.7 |
1,150.4 |
3.7 |
5.05 |
0.15 |
11.3 |
na |
|
|
|
|
|
|
|
Assay |
1,147.2 |
1,149.0 |
1.8 |
9.12 |
0.17 |
19.2 |
na |
CB-21-29 |
554198 |
5509781 |
383 |
90 |
-65 |
1,068.0 |
Metallurgy |
1,050.2 |
1,054.7 |
4.5 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,050.6 |
1,054.3 |
3.7 |
2.47 |
0.87 |
9.3 |
na |
|
|
|
|
|
|
|
Assay |
1,051.6 |
1,053.1 |
1.5 |
5.25 |
2.05 |
12.7 |
na |
CB-21-30 |
554198 |
5509781 |
383 |
90 |
-65 |
1,068.0 |
Metallurgy |
1,007.2 |
1,016.3 |
9.1 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,005.0 |
1,015.45 |
10.45 |
2.23 |
0.52 |
7.7 |
na |
|
|
|
|
|
|
|
Assay |
1,010.3 |
1,014.9 |
4.6 |
4.04 |
1.02 |
13.7 |
na |
CB-21-32 |
554673 |
5510019 |
396 |
90 |
-57 |
641.4 |
Metallurgy |
1,118.9 |
1,125.6 |
6.7 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,119.5 |
1,125.0 |
5.5 |
3.46 |
0.25 |
8.4 |
na |
|
|
|
|
|
|
|
Assay |
1,120.4 |
1,124.0 |
3.6 |
4.63 |
0.30 |
11.4 |
na |
CB-21-32W1 |
554198 |
5509781 |
383 |
105 |
-68 |
1,149.0 |
Metallurgy |
1,069.4 |
1,086.8 |
17.3 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1071.0 |
1085.2 |
14.2 |
2.26 |
0.18 |
7.4 |
na |
|
|
|
|
|
|
|
Assay |
1071.8 |
1078.6 |
6.8 |
3.67 |
0.26 |
9.7 |
na |
CB-21-32W2 |
554198 |
5509781 |
383 |
105 |
-68 |
1,155.0 |
Metallurgy |
1,035.5 |
1,047.3 |
11.7 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1036.6 |
1046.2 |
9.6 |
2.19 |
0.20 |
6.58 |
na |
|
|
|
|
|
|
|
Assay |
1043.6 |
1046.2 |
2.6 |
5.86 |
0.66 |
14.75 |
na |
CB-21-34 |
554257 |
5510030 |
381 |
75.0 |
-65.0 |
1204.0 |
Metallurgy |
1,159.8 |
1,164.2 |
4.4 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,160.2 |
1,163.8 |
3.6 |
4.52 |
0.12 |
8.1 |
na |
|
|
|
|
|
|
|
Assay |
1,161.2 |
1,162.85 |
1.65 |
9.75 |
0.24 |
14.7 |
na |
CB-21-35 |
554674 |
5510020 |
398 |
100.0 |
-56.0 |
468.0 |
Metallurgy |
427.0 |
435.9 |
8.9 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
427.8 |
435.1 |
7.3 |
1.43 |
0.17 |
4.9 |
na |
|
|
|
|
|
|
|
Assay |
431.5 |
434.6 |
3.1 |
2.03 |
0.32 |
6.6 |
na |
CB-21-36 |
554618 |
5510020 |
394 |
95.0 |
-63.0 |
633.0 |
Metallurgy |
607.5 |
610.7 |
3.2 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
607.8 |
610.4 |
2.6 |
1.35 |
0.22 |
10.2 |
na |
CB-21-41 |
554198 |
5509781 |
383 |
92.0 |
-60.0 |
1050.0 |
Metallurgy |
967.2 |
971.5 |
4.3 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
967.6 |
971.1 |
3.5 |
2.66 |
0.40 |
16.6 |
195 |
CB-21-42 |
554198 |
5509781 |
383 |
110.0 |
-63.0 |
1125.6 |
Metallurgy |
1,044.7 |
1,048.3 |
3.7 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,045.0 |
1,048.0 |
3.0 |
2.71 |
0.18 |
22.3 |
- |
CB-21-48 |
554198 |
5509781 |
383 |
95.0 |
-72.0 |
1311.0 |
Metallurgy |
1,261.0 |
1,264.1 |
3.0 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,261.3 |
1,263.8 |
2.5 |
2.42 |
0.15 |
- |
- |
CB-21-51 |
554257 |
5510030 |
381 |
60.0 |
-56.0 |
1188.0 |
Metallurgy |
1,140.9 |
1,147.5 |
6.6 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,141.5 |
1,146.9 |
5.4 |
2.24 |
0.10 |
- |
142 |
|
|
|
|
|
|
|
Assay |
1,144.0 |
1,146.9 |
2.9 |
3.44 |
0.17 |
- |
262 |
CB-21-53 |
554618 |
5510020 |
394 |
135.0 |
-60.0 |
804.0 |
Metallurgy |
768.1 |
770.5 |
2.4 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
768.3 |
770.3 |
2.0 |
3.34 |
0.56 |
15.6 |
- |
CB-21-55 |
554618 |
5510020 |
394 |
100.0 |
-68.0 |
729.0 |
Metallurgy |
673.3 |
678.0 |
4.8 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
673.7 |
677.6 |
3.9 |
8.03 |
0.86 |
42.1 |
1,109 |
CB-21-56 |
554257 |
5510030 |
381 |
56.0 |
-66.0 |
1374.0 |
Metallurgy |
1,293.7 |
1,297.3 |
3.7 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,294.0 |
1,297.0 |
3.0 |
2.10 |
0.10 |
- |
- |
CB-21-57 |
554618 |
5510020 |
394 |
118.0 |
-70.0 |
747.0 |
Metallurgy |
719.5 |
724.7 |
5.1 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
720.0 |
724.2 |
4.2 |
6.18 |
0.12 |
26.6 |
271 |
CB-22-70 |
554562 |
5510292 |
380 |
96.0 |
-52.0 |
693.0 |
Metallurgy |
628.1 |
632.4 |
4.3 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
628.5 |
632.0 |
3.5 |
1.03 |
0.06 |
7.4 |
- |
CB-22-74 |
554264 |
5510035 |
384 |
90.1 |
-62.0 |
1041.0 |
Metallurgy |
982.4 |
984.9 |
2.6 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
982.6 |
984.7 |
2.1 |
1.19 |
0.16 |
4.8 |
132 |
CB-22-76 |
554236 |
5509858 |
382 |
86.5 |
-61.0 |
999.0 |
Metallurgy |
954.2 |
960.8 |
6.6 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
954.8 |
960.2 |
5.4 |
3.37 |
1.00 |
23.7 |
1,597 |
CB-22-78 |
554258 |
5510033 |
380 |
89.5 |
65.0 |
1110.0 |
Metallurgy |
1,048.6 |
1,054.3 |
5.7 |
N/A |
N/A |
N/A |
N/A |
|
|
|
|
|
|
|
Assay |
1,049.1 |
1,053.8 |
4.7 |
2.30 |
0.14 |
7.7 |
150 |
Notes:
- From hole CB-19-08 to CB-21-38 and from CB-22-70 to CB-22-78,
the true width of the structures intersected is estimated at
approximately 55-65% of the downhole width.
- From hole CB-21-39 to CB-21-57, the
true width of the structures intersected is estimated at
approximately 60-75% of the downhole width. For holes CB-21-48, the
true width of the structures intersected is estimated at
approximately 55-60% of the downhole width.
Devlin Metallurgical Test
Work
A total of 3 HQ diamond drill ½ core were used
for the Devlin composite sample for the 2021 flotation tests. A
total of 4 HQ diamond drill ½ core and material left from the 2021
metallurgical test work (the other ½ drill cores from the 3 HQ
holes) were used for the Devlin composite sample for the 2022 ore
sorting tests. The table shows the sampling interval for each hole
collected for the composite sample (sample type: Flotation or Ore
Sorting).
Hole ID |
X |
Y |
Z |
Azi |
Dip |
Depth (m) |
Sample Type |
From (m) |
To (m) |
Interval (m) |
DV-21-01 |
548063 |
5511863 |
380 |
333 |
-50 |
120 |
Flotation |
87.4 |
89.7 |
2.3 |
DV-21-02 |
548063 |
5511863 |
380 |
360 |
-90 |
102 |
Flotation |
65.8 |
68.1 |
2.3 |
DV-21-03 |
548063 |
5511863 |
380 |
29 |
-50 |
111 |
Flotation |
92.8 |
95.1 |
2.3 |
DV-22-04 |
548083 |
5511859 |
380 |
0 |
-90 |
84 |
Ore Sorting |
64.5 |
66.8 |
2.3 |
DV-22-05 |
548083 |
5511859 |
380 |
0 |
-90 |
84 |
Ore Sorting |
64.8 |
67.1 |
2.3 |
DV-22-06 |
548083 |
5511859 |
380 |
0 |
-70 |
84 |
Ore Sorting |
68.8 |
71.1 |
2.3 |
DV-22-07 |
548083 |
5511859 |
380 |
0 |
-70 |
84 |
Ore Sorting |
69 |
71.3 |
2.3 |
APPENDIX B – Chibougamau Copper-Gold
Project – Foreign Mineral Resource Estimate Disclosures as at 30
March 2022
Deposit |
Category |
Tonnes (k) |
Cu Grade (%) |
Au Grade (g/t) |
Cu Metal (kt) |
Au Metal (koz) |
CuEq Grade(%) |
Corner Bay (2022) |
Indicated |
2,700 |
2.7 |
0.3 |
71 |
22 |
2.9 |
Inferred |
5,900 |
3.4 |
0.3 |
201 |
51 |
3.6 |
Devlin (2022) |
Measured |
120 |
2.7 |
0.3 |
3 |
1 |
2.9 |
Indicated |
660 |
2.1 |
0.2 |
14 |
4 |
2.3 |
Measured & Indicated |
780 |
2.2 |
0.2 |
17 |
5 |
2.4 |
Inferred |
480 |
1.8 |
0.2 |
9 |
3 |
2.0 |
Joe Mann (2022) |
Inferred |
610 |
0.2 |
6.8 |
1 |
133 |
5.5 |
Cedar Bay (2018) |
Indicated |
130 |
1.6 |
9.4 |
2 |
39 |
8.9 |
Inferred |
230 |
2.1 |
8.3 |
5 |
61 |
8.5 |
Total |
Measured & Indicated |
3,600 |
2.5 |
0.6 |
90 |
66 |
3.0 |
Total |
Inferred |
7,200 |
3.0 |
1.1 |
216 |
248 |
3.8 |
APPENDIX C – 2012 JORC Table
1
Section 1 Sampling Techniques and Data
Criteria |
JORC Code explanation |
Commentary |
Sampling techniques |
Nature and quality of sampling (eg cut channels, random chips, or
specific specialised industry standard measurement tools
appropriate to the minerals under investigation, such as down hole
gamma sondes, or handheld XRF instruments, etc). These examples
should not be taken as limiting the broad meaning of sampling. |
- Material used for
the metallurgical samples was selected from 34 holes at Corner Bay:
- Samples were quarter
NQ core with a total weight of 202kg. The core material selected
represented different rock types: semi and massive sulphides,
quartz veins, diorite dyke, and fresh and altered anorthosite.
- Diamond core was
previously cut using a core saw on site. Trays with the remaining
half core selected intervals were sent to Base Metallurgical
Laboratories in Kamloops, British Columbia for defined
metallurgical test work.
- Material used for
the metallurgical samples at Devlin:
- 2021 test: material
selected from 3 HQ drill cores; samples were half HQ core weighing
2kg for each sample. Material sent to Corem mineral processing
facility in Quebec City, Canada for defined metallurgical test
work.
- 2022 test: material
selected 4 HQ drill ½ cores drilled in 2022 and material from three
½ HQ drill cores from 2021. Material sent to SGS Canada Inc.
mineral processing in Quebec City, Canada for defined metallurgical
test work.
- Diamond core was cut
using a core saw on site. Trays with the remaining half core
remained at site.
|
Include reference to measures taken to ensure sample representivity
and the appropriate calibration of any measurement tools or systems
used. |
- All sample
collection, core logging, and specific gravity determinations were
completed by Dore Copper Mining Corp (now a wholly owned subsidiary
of Cygnus Metals Ltd) under the supervision of a professionally
qualified registered geologist.
- NQ and HQ core was
marked for splitting during logging and is sawn using a diamond
core saw with a mounted jig to assure the core is cut lengthwise
into equal halves.
|
Aspects of the determination of mineralisation that are Material to
the Public Report.In cases where ‘industry standard’ work has been
done this would be relatively simple (eg ‘reverse circulation
drilling was used to obtain 1 m samples from which 3 kg was
pulverised to produce a 30 g charge for fire assay’). In other
cases more explanation may be required, such as where there is
coarse gold that has inherent sampling problems. Unusual
commodities or mineralisation types (eg submarine nodules) may
warrant disclosure of detailed information. |
- Industry standard
sampling practices were used with sample lengths ranging from 0.3 m
to 1.0 m and respected geological contacts. Sample tags were placed
at the beginning of each sample interval and the tag numbers were
recorded in an MS Excel database.
- Sampling practice is
considered to be appropriate to the geology and style of
mineralisation.
|
Drilling techniques |
Drill type (eg core, reverse circulation, open-hole hammer, rotary
air blast, auger, Bangka, sonic, etc) and details (eg core
diameter, triple or standard tube, depth of diamond tails,
face-sampling bit or other type, whether core is oriented and if
so, by what method, etc). |
- Material for the
metallurgical test work used diamond core exclusively.
- At Corner Bay the
core size was NQ, quarter-cut.
- At Devlin the core
size was HQ, half-cut.
- All samples were
originally oriented by Company geologists.
|
Drill sample recovery |
Method of recording and assessing core and chip sample recoveries
and results assessed.Measures taken to maximise sample recovery and
ensure representative nature of the samples.Whether a relationship
exists between sample recovery and grade and whether sample bias
may have occurred due to preferential loss/gain of fine/coarse
material. |
- Diamond core
recovery was measured for each run and calculated as a percentage
of the drilled interval.
- Overall, the core
recoveries are excellent in the Chibougamau area.
|
Logging |
Whether core and chip samples have been geologically and
geotechnically logged to a level of detail to support appropriate
Mineral Resource estimation, mining studies and metallurgical
studies. |
- All core was
geologically and geotechnically logged. Lithology, veining,
alteration and mineralisation are recorded in multiple tables of
the drillhole database
|
Whether logging is qualitative or quantitative in nature. Core (or
costean, channel, etc) photography. |
- Geological logging
of core is qualitative and descriptive in nature.
|
The total length and percentage of the relevant intersections
logged. |
- 100% of the core has
been logged.
|
Sub-sampling techniques and sample preparation |
If core, whether cut or sawn and whether quarter, half or all core
taken.If non-core, whether riffled, tube sampled, rotary split, etc
and whether sampled wet or dry.For all sample types, the nature,
quality and appropriateness of the sample preparation
technique.Quality control procedures adopted for all sub-sampling
stages to maximise representivity of samples.Measures taken to
ensure that the sampling is representative of the in-situ material
collected, including for instance results for field
duplicate/second-half sampling.Whether sample sizes are appropriate
to the grain size of the material being sampled. |
- Core was cut in half
using conventional diamond core saw. Half was sent for initial
analysis with the remainder was quarter cored with half retained
and half used for metallurgical test work.
- Sample intervals are
based on geological intervals ranging from 30cm to 1m.
- This sampling
technique is industry standard and deemed appropriate.
|
Quality of assay data and laboratory tests |
The nature, quality and appropriateness of the assaying and
laboratory procedures used and whether the technique is considered
partial or total. |
- Sample preparation
was done at SGS Canada Inc. (“SGS”) in Val-d’Or, Québec and
Burnaby, B.C. and fire assay and ICP analysis was done at SGS in
Burnaby, B.C.
- Samples were
weighed, dried, crushed to 75% passing 2 mm, split to
250 g, and pulverized to 85% passing 75 microns.
- Samples were then
fire assayed for Au (50 g) and sodium peroxide fusion ICP-MS
finish for 34 elements.
|
For geophysical tools, spectrometers, handheld XRF instruments,
etc, the parameters used in determining the analysis including
instrument make and model, reading times, calibrations factors
applied and their derivation, etc. |
|
Nature of quality control procedures adopted (eg standards, blanks,
duplicates, external laboratory checks) and whether acceptable
levels of accuracy (i.e. lack of bias) and precision have been
established. |
- Laboratory QC
procedures involve the use of internal certified reference material
as assay standards, along with blanks, duplicates and
replicates.
|
Verification of sampling and assaying |
The verification of significant intersections by either independent
or alternative company personnel. |
- Verification of
sampling was made by Cygnus Metals and other professional
consultant geologists.
|
The use of twinned holes. |
|
Documentation of primary data, data entry procedures, data
verification, data storage (physical and electronic)
protocols. |
- All logging data was
completed, core marked up, logging and sampling data was entered
directly into the database.
- The logged data is
stored on the site server directly.
|
Discuss any adjustment to assay data. |
- There was no
adjustment to the assay data.
|
Location of data points |
Accuracy and quality of surveys used to locate drill holes (collar
and down-hole surveys), trenches, mine workings and other locations
used in Mineral Resource estimation. |
- The location of the
drillholes and the aiming points for the orientation of the
drillholes were indicated on the ground using identified stakes.
The stakes marking the location of the drillholes were set up and
located with a Garmin GPS model “GPSmap 62s” (4m accuracy).
- Surveys are
collected using a Reflex EZ-Shot® single-shot electronic instrument
with readings collected at intervals of approximately every 30 m
downhole plus a reading at the bottom of the hole.
|
Specification of the grid system used. |
- The grid system used
is UTM NAD83 (Zone 18).
|
Quality and adequacy of topographic control. |
- A Digital Terrane
Model (DTM) has been used to accurately plot the vertical position
of the holes.
|
Data spacing and distribution |
Data spacing for reporting of Exploration Results. |
- The spacing is
considered appropriate for this type of metallurgical test
work.
|
Whether the data spacing and distribution is sufficient to
establish the degree of geological and grade continuity appropriate
for the Mineral Resource and Ore Reserve estimation procedure(s)
and classifications applied. |
- No resource
estimation is made.
|
Whether sample compositing has been applied. |
- No sample
compositing has been applied.
|
Orientation of data in relation to geological structure |
Whether the orientation of sampling achieves unbiased sampling of
possible structures and the extent to which this is known,
considering the deposit type. |
- Drilling is not
always orientated approximately at right angles to the currently
interpreted strike of the known interpreted mineralisation. The
true width of the structure intersected is estimated at
approximately 55-75% of the downhole width (refer to Appendix
A).
|
If the relationship between the drilling orientation and the
orientation of key mineralised structures is considered to have
introduced a sampling bias, this should be assessed and reported if
material. |
- No bias is
considered to have been introduced by the existing sampling
orientation.
|
Sample security |
The measures taken to ensure sample security. |
- Core was placed in
wooden core boxes close to the drill rig by the drilling
contractor. The core was collected daily by the drilling contractor
and delivered to the secure core logging facility. Access to the
core logging facility is limited to Cygnus employees or
designates.
|
Audits or reviews |
The results of any audits or reviews of sampling techniques and
data. |
- No audits have been
undertaken, therefore information on audits or reviews is not yet
available.
|
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this
section.)
Criteria |
JORC Code Explanation |
Commentary |
Mineral tenement and land tenure status |
Type, reference name/number, location and ownership including
agreements or material issues with third parties such as joint
ventures, partnerships, overriding royalties, native title
interests, historical sites, wilderness or national park and
environmental settings. |
- The data reported
within this announcement is from the Chibougamau Project. The
Chibougamau project consists of 3 properties which includes:
- Copper Rand (1
mining license, 19 mining concession and 147 exploration
claims)
- Corner Bay – Devlin
(1 mining license, 111 exploration claims)
- Joe Mann (2 mining
concessions, 74 exploration claims)
- Copper Rand and
Corner Bay – Devlin are held 100% by CBAY Minerals Inc, a wholly
owned subsidiary of Cygnus Metals.
- 767ha of the Joe
Mann property is held by CBAY with the remaining 1965ha held under
option agreement with Resources Jessie.
- The properties
collectively making up the Project are in good standing based on
the Ministry of Energy and Natural Resources (Ministère de
l’Énergie et des Ressources Naturelles) GESTIM claim management
system of the Government of Québec.
|
The security of the tenure held at the time of reporting along with
any known impediments to obtaining a licence to operate in the
area. |
- All tenure is in
good standing.
|
Exploration done by other parties |
Acknowledgment and appraisal of exploration by other parties. |
- The Chibougamau
Copper and Gold project comprising Corner Bay, Devlin, Cedar Bay
and Joe Mann have seen an extensive exploration history dating back
to the early 1900s. The Technical Report issued and filed on SEDAR+
by Dore Copper in June 2022 provides a detailed history of the
exploration activities undertaken by previous explorers.
- Corner Bay was first
identified as a prospect in 1956
- 1956 – 1972 eight
drilling programs totalling 1,463 m and various geophysical and
electromagnetic (EM) surveys
- 1973 – 1981 Riocanex
and Flanagan McAdam: ground geophysical surveys and 43 diamond
drill holes
- 1982 – 1984 Riocanex
and Corner Bay Exploration: 38 drill holes and metallurgical test
work
- 1988 – 1991 Corner
Bay Exploration: diamond drilling, geophysical surveys and
geological characterisation with initial MRE
- 1992 – 1994 SOQUEM
optioned and acquired a 30% interest, and completed diamond
drilling
- 1994 Explorations
Cache Inc and Ressources MSV Inc: diamond drilling
- 2004 – 2006 GéoNova
and MSV: 98 diamond drill holes and first Technical Report on the
Corner Bay project reporting a MRE
- 2007 – 2009
Campbell: diamond drilling and bulk sample
- 2012 - 2019 CBAY /
AmAuCu: diamond drilling and MRE
- Devlin identified in
1972 by airborne survey flown by the MERN
- 1979 – 1981 diamond
drilling, geophysical surveys
- 1981 mining
commenced
- Joe Mann identified
in 1950 with the commencement of mining activities occurring in
1956
- The Joe Mann mine
operated underground during three different periods from 1956 to
2007
- In July 2012,
Ressources Jessie acquired the Joe Mann mine property, but
conducted only surface exploration work
- Cedar Bay was
discovered prior to 1927 by Chibougamau McKenzie Mines Ltd
- From initial
discovery to 2013 various surface and underground drilling
campaigns and geophysical surveys undertaken by various
companies
|
Geology |
Deposit type, geological setting and style of mineralisation. |
- Corner Bay and
Devlin are located at the northeastern extremity of the Abitibi
subprovince in the Superior province of the Canadian Shield and are
examples of Chibougamau-type copper-gold deposits. The Abitibi
subprovince is considered as one of the largest and best-preserved
greenstone belts in the world and hosts numerous gold and base
metal deposits.
- The Corner Bay
deposit is located on the southern flank of the Doré Lake Complex
(DLC). It is hosted by a N 15° trending shear zone more or less
continuous with a strong 75° to 85° dip towards the west. The host
anorthosite rock is sheared and sericitized over widths of 2 m to
25 m. The deposit is cut by a diabase dyke and is limited to the
north by a fault structure and to the south by the LaChib
deformation zone.
- The Corner Bay
deposit consists of three main mineralised lodes (subparallel Main
Lode 1 and Main Lode 2 above the dyke, and Main Lode below the dyke
that make up the bulk of the deposit. The Corner Bay deposit has
been traced over a strike length to over 1,000 m to a depth of
1,350 m and remains open at depth.
- The mineralisation
is characterized by veins and/or lenses of massive to semi-massive
sulphides associated with a brecciated to locally massive
quartz-calcite material. The sulphide assemblage is composed of
chalcopyrite, pyrite, and pyrrhotite with lesser amounts of
molybdenite and sphalerite. Late remobilized
quartz-chalcopyrite-pyrite veins occur in a wide halo around the
main mineralization zones.
- Devlin is a
flat-lying, copper-rich lodes-hosted deposit in a polygenic igneous
breccia that is less than 100 m from the surface. The tabular
bodies have been modelled as four nearly horizontal lodes: a more
continuous lower zone and three smaller lodes comprising the upper
zone. Mineralisation is reflected as a fracture zone often composed
of two or more sulphide-quartz lodes and stringers. Thickness of
the mineralised zones range from 0.5 m to 4.4 m. It has been
diluted during modelling to reflect a minimum mining height of 1.8
m.
- The Joe Mann deposit
is characterized by east-west striking shear hosted lodes that
extend beyond 1,000m vertically with mineralisation identified over
a 3 km strike length. These shear zones form part of the
Opawica-Guercheville deformation zone, a major deformation corridor
cutting the mafic volcanic rocks of the Obatogamau Formation in the
north part of the Caopatina Segment. The gabbro sill hosts the Main
Zone and the West Zone at the mine, while the South Zone is found
in the rhyolite. These three subvertical E-W (N275°/85°)
ductile-brittle shear zones are sub-parallel to stratigraphy and to
one another, with up to 140 m to 170 m of separation between them.
These shear zones are hosted within a stratigraphic package
composed of iron-magnesium (Fe-Mg) carbonate and sericite altered
gabbro sills, sheared basalts, and intermediate to felsic tuffs
intruded by various felsic intrusions. The Joe Mann gold
mineralisation is hosted by decimetre scale quartz-carbonate lodes
(Dion and Guha 1988). The lodes are mineralised with pyrite,
pyrrhotite, and chalcopyrite disposed in lens and lodelets parallel
to schistosity, and occasionally visible gold. There are some other
minor, mineralised structures, e.g., North and South-South Zones,
with limited vertical and horizontal extensions.
|
Drill hole Information |
A summary of all information material to the understanding of the
exploration results including a tabulation of the following
information for all Material drill holes:
- easting and northing of the drill hole collar
- elevation or RL (Reduced Level – elevation above sea level in
metres) of the drill hole collar
- dip and azimuth of the hole
- down hole length and interception depth
- hole length.
If the exclusion of this information is justified on the basis that
the information is not Material and this exclusion does not detract
from the understanding of the report, the Competent Person should
clearly explain why this is the case. |
- The information is
tabulated in Appendix A, which includes the drill holes used for
the metallurgical test work for the Corner Bay and Devlin deposits
presented herein.
|
Data aggregation methods |
In reporting Exploration Results, weighting averaging techniques,
maximum and/or minimum grade truncations (eg cutting of high
grades) and cut-off grades are usually Material and should be
stated. |
- Appendix A reports
the significant drill intersections for the Corner Bay 34 holes
used for the composite samples for metallurgical test work. The
assays reported are uncut.
|
Where aggregate intercepts incorporate short lengths of high-grade
results and longer lengths of low-grade results, the procedure used
for such aggregation should be stated and some typical examples of
such aggregations should be shown in detail. |
- Appendix A reports
the included intersections of the significant drill
intersections.
|
The assumptions used for any reporting of metal equivalent values
should be clearly stated. |
- Metal equivalents
for the foreign estimate have been calculated at a copper price of
US$8,750/t, gold price of US$2,350/oz, copper equivalents
calculated based on the formula CuEq (%) = Cu(%) + (Au (g/t) x
0.77258). Metallurgical recovery factors have been applied to the
copper equivalents calculations, with copper metallurgical recovery
assumed at 95% and gold metallurgical recovery assumed at 85% based
upon historical production at the Chibougamau Processing Facility
and more recent metallurgical test work reported in this release.
It is the Company’s view that all elements in the copper equivalent
calculations have a reasonable potential to be recovered and
sold.
|
Relationship between mineralisation widths and intercept
lengths |
These relationships are particularly important in the reporting of
Exploration Results.If the geometry of the mineralisation with
respect to the drill hole angle is known, its nature should be
reported.If it is not known and only the down hole lengths are
reported, there should be a clear statement to this effect (eg
‘down hole length, true width not known’). |
- The majority of the
drill holes in the database are drilled as close to orthogonal to
the plane of the mineralised lodes as possible.
|
Diagrams |
Appropriate maps and sections (with scales) and tabulations of
intercepts should be included for any significant discovery being
reported. These should include, but not be limited to a plan view
of drill hole collar locations and appropriate sectional
views. |
- See below Figure 1: Corner Bay
Drillhole Location for the Composite Sample Used in Ore Sorting
Test Shown in Plan View
- See below Figure 2: Corner Bay Sample
Location for Composite Sample Used in Ore Sorting Test Shown in an
Isometric Long Section.
- See below Figure 3: Devlin drillhole
location for the samples used in gravity, flotation and ore sorting
tests shown in plan view.
|
Balanced reporting |
Where comprehensive reporting of all Exploration Results is not
practicable, representative reporting of both low and high grades
and/or widths should be practiced to avoid misleading reporting of
Exploration Results. |
- Appendix A reflects
the significant drill intercepts representative of the Corner Bay
deposit that were included in the composite sample for
metallurgical test work.
|
Other substantive exploration data |
Other exploration data, if meaningful and material, should be
reported including (but not limited to): geological observations;
geophysical survey results; geochemical survey results; bulk
samples – size and method of treatment; metallurgical test results;
bulk density, groundwater, geotechnical and rock characteristics;
potential deleterious or contaminating substances. |
- Base Metallurgical
Laboratories in Kamloops, British Columbia was commissioned to
complete Corner Bay metallurgical development and locked cycle
flotation testing:
- The CBSP composite
was firstly compiled into a 202 kilogram sample with a grade of
2.20% Cu.
- The CBSP composite
was then processed through the Steinert ore sorter and mixed with
26% of the unsorted underflow by-passed mineralised material to
represent an overall sorted pre-concentrate mineralised material
product.
- The CBSP composite
resulted in a 123 kilogram sample with a grade of 3.31% Cu.
- The composite sample
was evaluated through lock cycle tests to determine the flotation
metallurgical performance.
- The sample was
prepared to a nominal grind size of 140 microns K80 in the rougher
testing and then processed through a regrind size of approximately
37 microns K80 in the cleaner tests.
- The sample responded
consistently throughout the test work with excellent performance to
conventional flotation processing methods and reagents.
- Two locked cycle
tests were completed with varying retention times to determine the
concentrate grade versus recovery
See below Figure 4: Flow Sheet Schematic for the Corner Bay Sorting
and Flotation Test Work.
- Corem in 2021 and
SGS Canada Inc. in 2022, in their mineral processing facility both
located in Quebec City were commissioned to complete the Devlin
metallurgical test work:
- The 2021 work
included a total of four flotation tests and one locked cycle test.
Ahead of each flotation test, a 2-kg sample was ground to a P80 of
approximately 125 µm. The results of each test were analysed, and
Test 4 was identified as showing the best metallurgical
performance. with a copper grade of 28.3% and recovery of 90.8%.
However, the gold recovery was low at 51.7% and the gold grade was
less than 10 g/t. Therefore, a locked cycle test was carried out to
assess the stability of the Test 4 conditions. Six 1 kg charges of
minus 10 mesh (-2 mm) were used for the locked cycle test. The
locked cycle tests yielded a concentrate grade at 20.5% Cu with
98.2% recovery and a gold recovery of 74.6%.
- The 2022 work
included a sorting test done on a crush sample of 3/4“ nominal size
from four HQ drill ½ cores drilled in 2022 and material from three
½ HQ drill cores from 2021. Copper recovery of 97.2% was
obtained.
See below Figure 5: Flow Sheet Schematic for the Devlin Sorting,
Gravity and Flotation Test Work. |
Further work |
The nature and scale of planned further work (eg tests for lateral
extensions or depth extensions or large-scale step-out
drilling).Diagrams clearly highlighting the areas of possible
extensions, including the main geological interpretations and
future drilling areas, provided this information is not
commercially sensitive. |
- The Company will be
conducting drill testing of additional mineralisation as well as
step out drilling of existing lodes to further enhance the
resources quoted in this release. More information is presented in
the body of this report.
|
Figure 1: Corner Bay Drillhole Location for the Composite Sample
Used in Ore Sorting Test Shown in Plan View
Figure 2: Corner Bay Sample Location for Composite Sample Used
in Ore Sorting Test Shown in an Isometric Long Section.
Figure 3: Devlin drillhole location for the samples used in
gravity, flotation and ore sorting tests shown in plan view.
Figure 4: Flow Sheet Schematic for the Corner Bay Sorting and
Flotation Test Work.
Figure 5: Flow Sheet Schematic for the Devlin Sorting, Gravity
and Flotation Test Work.
Images accompanying this announcement are available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/f91b81e3-794b-4b5c-a358-bdcec3faf01e
https://www.globenewswire.com/NewsRoom/AttachmentNg/cf822ff2-6270-4da2-9234-01d42e522607
https://www.globenewswire.com/NewsRoom/AttachmentNg/25706f8b-2061-4a74-81c3-f0de0ce5e9d7
https://www.globenewswire.com/NewsRoom/AttachmentNg/efdad838-4db7-4752-8412-eb14b68ed0f5
https://www.globenewswire.com/NewsRoom/AttachmentNg/05429902-e0d7-4e3f-bc26-356659b685e8
https://www.globenewswire.com/NewsRoom/AttachmentNg/ed66d4cc-3bfe-48b9-b420-db6b282c6681
https://www.globenewswire.com/NewsRoom/AttachmentNg/357e25f7-f3ca-4e7a-963c-17a8f4fca51a
https://www.globenewswire.com/NewsRoom/AttachmentNg/294d90d6-275f-40d6-bfd2-f0026e3b68db
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