TSX-V: NDR
VANCOUVER, June 18, 2019 /CNW/ - New Dimension Resources
Ltd. (TSXV: NDR) (the "Company", or "New Dimension") is pleased to
report that 92% gold recoveries have been returned from preliminary
bottle roll leach tests performed on two high-grade, composite
drill core samples from the Calandria Norte and Morena vein/breccia
zones at the Las Calandrias Project (Figures 1 and 2).
The leach tests were performed in Parksville, British Columbia by Blue Coast
Research ("Blue Coast"), with the main objectives of i) confirming
the high gold recoveries returned from earlier LeachWELL tests
performed on Calandria Norte mineralization and ii) providing
high-level metallurgical data on the potential compatibility of the
high-grade Calandria Norte and Morena gold mineralization with the
processing circuits utilized in industry-standard gold-silver leach
circuits.
Highlights
- Gold recoveries of 92.2% and 92.7% were obtained from bottle
roll leach tests performed on two composite samples from the
Calandria Norte and Morena vein/breccia zones, respectively. Silver
recoveries of 69.8% and 70.8%, respectively, were also
reported.
- Measured head grades for the Calandria Norte and Morena samples
were 15.0 g/t Au + 61.6 g/t Ag, and 15.2 g/t Au + 28.2 g/t Ag,
respectively. The two test samples were composites of quartered
drill core intervals as indicated in Table 1.
- These gold-silver recoveries were returned from 48-hour bottle
roll leaches at relatively fine grinds
(P80=90-100μm).
- Results from the current test work program are broadly in-line
with the preliminary results obtained from previous LeachWELL
analyses of Calandria Norte.
Eric Roth, New Dimension's CEO,
commented today: "I am very pleased to be reporting excellent gold
recoveries from the preliminary leach test work undertaken on
composite samples from the Calandria Norte and Morena vein/breccia
systems. Our view has always been that the higher-grade Calandria
Norte and Morena vein systems should be the Company's primary focus
at Las Calandrias, and these results further support our strategy.
Calandria Norte was one of the components of our updated Mineral
Resources Estimate for Las Calandrias released in October, 2018,
contributing approximately 61,000 ounces of gold and 159,000 ounces
of silver in Indicated Category Resources (see detail in Appendix
1). In contrast, significant strike extent of the Morena system
remains to be drill tested and the potential for resource growth
remains high. There is no doubt that future work at Las
Calandrias will continue to focus on the high-grade Calandria Norte
and Morena vein systems."
Link to figures:
https://newdimensionresources.com/site/assets/files/13136/2019_06_met_testwork_cn.pdf
Leach Test Methodology
The two composite samples used in the leach test work were
prepared from quartered drill core samples from the Calandria Norte
and Morena vein/breccia zones (Table 1; Figures 3 and 4). The
samples were individually crushed and blended at Blue Coast's
Parksville facility prior to
grinding to approximately 80% passing 100μm and bottle roll
leaching. 48-hour bottle roll tests were completed on 500g charges
of composite sample and included solution sampling points at 2, 6,
24, and 48 hours for determination of leach kinetics (Figure 5).
Both NaCN concentrations and pH were monitored and maintained
during the tests, with the resulting test solutions/residues being
assayed for gold and silver (and recoveries calculated).
Table 1. Drill core intervals used in the preparation of the
composite samples
Vein
|
Head
Grade
Au
(g/t)
|
Head
Grade
Ag
(g/t)
|
Drill
Hole
|
From
(metres)
|
To
(metres)
|
Mass
(kg)
|
Calandria
Norte
|
15.0
|
61.6
|
CND-4
|
58.0
|
62.0
|
20.6
|
CND-125
|
89.3
|
91.7
|
CND-131
|
120.5
|
126.0
|
CND-134
|
78.8
|
82.4
|
Morena
|
15.2
|
28.2
|
CAL18-12
|
18.8
|
23.0
|
8.5
|
CND-250
|
58.6
|
62.0
|
Consumption of NaCN and CaO were estimated at 2.63 kg/t and 1.72
kg/t, respectively, for Calandria Norte and 2.43 kg/t and 1.47
kg/t, respectively, for composite Morena.
Quality Assurance / Quality Control (QA/QC)
New Dimension applies industry-standard sampling methodologies
and techniques. All drill core samples utilized in this leach test
work program were collected under the supervision of the Company's
geologists and in accordance with best industry practices, with
quartered HQ-sized core being utilized in this study. All original
core intervals from drilling at Las Calandrias were photographed,
logged, cut in half with a core saw, and then sent to Alex Stewart's sample preparation facility in
Puerto San Julian. Pulps for initial
geochemical assaying were then sent to the Alex Stewart's
accredited analytical lab in Mendoza, Argentina. All geochemical assays reported
herein have been subjected to quality assurance / quality control
programs using a combination of internationally-recognized
standards, duplicates, and blanks, as provided by Alex Stewart, Blue Coast, and the Company.
Qualified Persons and Disclosure Statement
The technical information in this news release has been prepared
in accordance with Canadian regulatory requirements set out in
National Instrument ("NI") 43-101, and approved by Eric Roth, the Company's President & CEO, a
director and a Qualified Person under NI 43-101. Mr. Roth
holds a Ph.D. in Economic Geology from the University of
Western Australia, is a Fellow of
the Australian Institute of Mining and Metallurgy (AusIMM), and is
a Fellow of the Society of Economic Geologists (SEG). Mr. Roth has
over 25 years of experience in international minerals exploration
and mining project evaluation.
The information presented in this news release was also reviewed
and approved by Andy Holloway,
P.Eng., CEng., Principal Process Engineer for AGP Mining
Consultants. Mr. Holloway is a Qualified Person as defined by
National Instrument 43-101.
On Behalf of the Board of New Dimension Resources Ltd.
"Eric Roth"
___________________________
Eric Roth, Ph.D., FAusIMM
President
& CEO
About New Dimension Resources
New Dimension is engaged
in the acquisition, exploration, and development of quality mineral
resource properties throughout the Americas, with a focus on
high-grade precious metals deposits. The Company's current focus is
on the discovery of new high-grade gold-silver resources at its
100%-owned Las Calandrias, Los Cisnes and Sierra Blanca projects, all located in the
highly prospective Deseado Massif of Santa Cruz Province, southern Argentina. The Company also holds an option to
earn-in to a 100% interest in the Savant
Lake gold project in Ontario, together with a 29.56% JV interest
(with Yamana Gold) in the Domain gold project in Manitoba.
About Blue Coast Research
Blue Coast Research, located
in Parksville, British Columbia,
provides metallurgical laboratory test work services, specializing
in precious and base metals, metallurgical flowsheet development,
evaluation of processes and technologies including grinding,
leaching, heap leaching, gravity concentration and flotation, to
full continuous pilot plant testing.
Cautionary Notes and Forward-looking
Statements
This news release contains forward-looking
information within the meaning of applicable securities
legislation. Forward-looking information is typically
identified by words such as: believe, expect, anticipate,
intend, estimate, postulate and similar expressions, or are those,
which, by their nature, refer to future events. Such
statements include, without limitation, statements regarding the
future results of operations, performance and achievements of New
Dimension, including the timing, completion of and results from the
exploration and drill programs described in this
release. Although the Company believes that such statements
are reasonable, it can give no assurances that such expectations
will prove to be correct. All such forward-looking information
is based on certain assumptions and analyses made by New Dimension
in light of their experience and perception of historical trends,
current conditions and expected future developments, as well as
other factors management believes are appropriate in the
circumstances. This information, however, is subject to a variety
of risks and uncertainties and other factors that could cause
actual events or results to differ materially from those projected
in the forward-looking information. Important factors that could
cause actual results to differ from this forward-looking
information include those described under the heading "Risks and
Uncertainties" in New Dimension's most recently filed MD&A. New
Dimension does not intend, and expressly disclaims any obligation
to, update or revise the forward-looking information contained in
this news release, except as required by law. Readers are cautioned
not to place undue reliance on forward-looking information.
Neither the TSXV nor its Regulation Services Provider (as
that term is defined in the policies of the TSXV) accepts
responsibility for the adequacy or accuracy of this
release.
Appendix 1
Updated Mineral Resources Estimate for Las
Calandrias Project (October, 2018)
Calandria Sur Deposit –
Mineral Resources within constraining Shell
|
|
|
Grades
|
Contained
Metal
|
Resource
|
Cut-off
Grade (gpt Au)
|
Tonnage (,000 t)
|
Au (gpt)
|
Ag (gpt)
|
Au (oz
Au)
|
Ag(oz
Ag)
|
Indicated
|
Varied
|
7,424
|
1.33
|
24.65
|
318,000
|
5,884,000
|
Inferred
|
Varied
|
1,739
|
0.73
|
7.17
|
41,000
|
401,000
|
Calandria Norte Deposit –
Mineral Resources within constraining Shell
|
|
|
Grades
|
Contained
Metal
|
Resource
|
Cut-off
Grade (gpt Au)
|
Tonnage (,000 t)
|
Au (gpt)
|
Ag (gpt)
|
Au (oz
Au)
|
Ag (oz
Ag)
|
Indicated
|
>0.8
|
604
|
3.12
|
8.20
|
61,000
|
159,000
|
Inferred
|
>0.8
|
19
|
1.31
|
0.69
|
1,000
|
400
|
Notes to Accompany
Calandria Sur MRE:
|
Summation errors may
occur due to rounding;
|
Mineral Resources are
reported within an optimized constraining shell;
|
Block matrix is 6m x
6m x 5m (length x width x height);
|
Grades are estimated
by ID3 interpolation;
|
Density was
interpolated by ID2. Blocks not populated by ID2 were
assigned the mean density 2.21;
|
Cut-off grade for MRE
varies by oxide zone (0.3 g/t Au oxide; 0.4 g/t Au transition; and
0.8 g/t Au primary zones);
|
Mineral Resources
that are not Mineral Reserves do not have demonstrated economic
viability
|
Constraining pit
parameters: (in $US)
|
|
Metal Price:
$1,400/oz Au; $18.50/oz Ag (based on 3 year rolling average
seller's prices)
|
|
Metal Recoveries: Au
(94%-oxide; 73% transition; 80% primary), Ag (88%-oxide; 78%
transition; 80% primary)
|
|
Mining Cost:
$2.50/t
|
|
Processing plus
General and Administration: $11-oxide; $11-transition;
$25-primary
|
|
Pit Slope:
45°
|
Notes to Accompany
Calandria Norte MRE:
|
Summation errors may
occur due to rounding;
|
Mineral Resources are
reported within, and below, an optimized constraining
shell;
|
Block matrix is 5m x
3m x 5m (length x width x height);
|
Grades are estimated
by ID3 interpolation;
|
Density was assigned
the mean density 2.41;
|
Cut-off grade used
for reporting MRE within constraining shell is 0.8 g/t
Au;
|
Cut-off grade used
for reporting MRE below constraining shell is 1.5 g/t
Au
|
Mineral Resources
that are not Mineral Reserves do not have demonstrated economic
viability.
|
Constraining pit
parameters: (in $US)
|
|
Metal Price:
$1,400/oz Au; $18.50/oz Ag (based on 3 year rolling average
seller's prices)
|
|
Metal Recoveries: Au
(80%), Ag (84%)
|
|
Mining Cost:
$2.50/t
|
|
Processing plus
General and Administration: $25
|
|
Pit Slope:
45°
|
This resource estimate was completed by Paul Daigle, of AGP Mining Inc., an Independent
Qualified Person as defined by National Instrument 43-101 Standards
of Disclosure for Mineral Projects ("NI 43-101"). Further details
of the estimation methods and procedures are available in the NI
43-101 report which was filed on SEDAR (www.sedar.com) on
November 8, 2018. Mineral Resources,
which are not Mineral Reserves have not yet demonstrated economic
viability. The estimate of mineral resources may be materially
affected by environmental, permitting, legal, title, taxation,
sociopolitical, marketing, or other relevant issues.
View original
content:http://www.prnewswire.com/news-releases/preliminary-leach-tests-indicate-92-gold-recoveries-for-calandria-norte-and-morena-veinbreccia-zones-300870362.html
SOURCE New Dimension Resources Ltd.