TIDMGGP
RNS Number : 2696T
Greatland Gold PLC
21 July 2022
21 July 2022
THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION AS STIPULATED
UNDER THE UK MARKET ABUSE REGULATIONS. ON PUBLICATION OF THIS
ANNOUNCEMENT VIA A REGULATORY INFORMATION SERVICE, THIS INFORMATION
IS CONSIDERED TO BE IN THE PUBLIC DOMAIN.
Greatland Gold plc
("Greatland" or "the Company")
Havieron Exploration and Development Update
Extensive Growth Drilling programme continues to identify high
grade mineralised extensions in the Eastern Breccia, South-East
Crescent Zone and Northern Breccia
New high-grade intercepts outside the Eastern Breccia Mineral
Resource support its potential to host multiple northwest trending
high grade sulphide dominated domains
High grade results in the Northern Breccia demonstrate the
potential for
further high-grade sulphide mineralisation outside the
South-East Crescent Zone
Greatland Gold plc (AIM:GGP), a mining development and
exploration company with a focus on precious and base metals, is
pleased to provide an exploration and development update at the
Havieron gold-copper project in the Paterson region of Western
Australia. The Company notes the release of an ASX announcement
titled "Quarterly Exploration Report" and "Quarterly Report" by
Newcrest Mining Ltd ("Newcrest") earlier today that included
results previously released in Greatland's announcement of 9 June
2022 along with the following new results.
Highlights
-- Seven drill rigs currently on site, all focused on growth
targeting:
-- Eastern Breccia: drilling continuing to expand the
mineralised footprint of the Eastern Breccia, including further
defining higher-grade zones
-- South-East Crescent: continuous mineralisation identified
across 1,000 vertical meters and remains open. Drilling continuing
to progressively test for extensions to the South-East Crescent,
with drilling planned up to 400 metres below the Updated Mineral
Resource(1)
-- Northern Breccia: drilling aimed at extending high-grade
zones of mineralisation at depth
-- New Targets: drilling continuing to test geophysical targets
outside of the main Havieron system, with follow-up drilling
planned at regional targets on the Havieron mining lease
New drilling results
-- Eastern Breccia drilling further highlights the geological
continuity of higher grade mineralisation. Recent intercepts
reinforce the potential for the Eastern Breccia corridor to host
Crescent style high grade mineralisation. The Eastern Breccia
remains open at depth:
-- HAD145AW4 returned 54m @ 3.8g/t Au & 0.02% Cu from 1,854m
including 19.6m @ 9.9g/t Au & 0.02% Cu from 1,854m
-- HAD141W2^ returned 39m @ 2.9g/t Au & 0.15% Cu from
1,824.6m including 13.8m @ 7.8g/t Au & 0.15% Cu from
1,849.8m
-- HAD152W1 returned 82.3m @ 1.7g/t Au & 0.96% Cu from
1,829.2m including 15.9m @ 1.9g/t Au & 1.6% Cu from
1,853.1m
-- HAD104W2 returned 51m @ 1.1g/t Au & 0.07% Cu from
1,496m
-- South-East Crescent drilling has extended the high grade zone
down a further 100 metres with Crescent zone having now been
continuously intersected to over 1,000 vertical metres (3800m RL(2)
) and remaining open at depth :
-- HAD108AW1 returned 93.3m @ 3.6g/t Au & 0.11% Cu from
599.7m including 12.4m @ 10.0g/t & 0.38% Cu.
-- HAD153 returned 44.9m @ 2.5g/t Au & 0.14% Cu from
1,577.1m including 25m @ 4.1g/t Au & 0.09% Cu from 1,585m
-- Northern Breccia intersected high grade results to
demonstrate the potential for further high grade sulphide
mineralisation outside the South-East Crescent Zone:
-- HAD055W7 intersected 70.9m @ 2.0g/t Au & 0.11% Cu from
973.8m including 1.4m @ 45.0g/t Au & 0.21% Cu from 1,043.3m
-- HAD055W9 intersected 89.0m @ 0.86g/t Au & 0.16% Cu from
835m including 10m @ 1.7g/t Au & 0.37% Cu from 873m
-- Early Works improvements: Construction activities are
progressing including:
-- An exploration decline advance of 489 metres as at 13 July
2022
-- 111.5 metres advanced since the last report on 9 June 2022
reflecting the highest daily advancement rate during a single
reporting period since commencement of the exploration decline
-- The infrastructure construction programme to support the
early works decline progression is largely complete. Establishment
of the site administration facilities, supporting mine and water
management infrastructure has been successfully completed
Poor ground conditions were experienced during the previous
quarter, c hanges in the design of the decline during the quarter
brought forward the first downward spiral to the current advance
position which has allowed the decline to transition into better
ground conditions as forecasted, which accelerated decline
advancement rates.
Works are ongoing to progress the necessary approvals and
permits required to commence construction of the infrastructure
which will support production at Havieron. Newcrest is reviewing
the impact of inflationary pressures on future capital expenditure
and operating costs as part of the Feasibility Study, with value
engineering and other cost mitigation strategies underway.
Feasibility Study The schedule for first ore continues to be
reviewed and will be updated with the release of the Feasibility
Study, which remains on track for completion during the December
2022 quarter(3) .
Shaun Day, Managing Director of Greatland Gold plc, commented: "
Havieron's extensive growth drilling program continues to identify
and expand high grade extensions to the mineralisation in the
Eastern Breccia, South-East Crescent Zone and Northern Breccia.
"Eastern Breccia growth drilling continues to expand and define
the mineralised footprint and extensions of the zonation. This
Eastern Breccia drilling includes a new northern-most high grade
intercept. The observed grade from this drilling reinforces the
potential for the Eastern Breccia corridor to host Crescent style
high grade mineralisation.
"With seven drill rigs all focusing on growth this demonstrates
the ongoing potential for the continued expansion of the Havieron
system footprint below and adjacent to the existing resource.
The observed acceleration of the decline advancement is
particularly pleasing. The improved advancement productivity is
consistent with the expected improvement of ground conditions with
depth. "
(1) Refers to Greatland's Updated Mineral Resource as announced
on 3(rd) March 2022
(2) Relative depth. All relative depth (RL) information is
reported in Australian Height Datum ( AHD) +5,000 metres
(3) Newcrest market update to Australian Stock Exchange on
12(th) October 2021
Significant New Results (intercepts are reported as downhole
width not true width)
Eastern Breccia
-- HAD104W2
-- 51m @ 1.1g/t Au & 0.07% Cu from 1,496m
-- HAD141W2^
-- 39m @ 2.8g/t Au & 0.15% Cu from 1,824.6m
-- including 13.8m @ 7.6g/t Au & 0.15% Cu from 1,849.8m
-- HAD145AW4
-- 54m @ 3.8g/t Au & 0.02% Cu from 1,854m
-- including 19.6m @ 9.9g/t Au & 0.02% Cu from 1,854m
-- HAD152W1
-- 82.3m @ 1.7g/t Au & 0.96% Cu from 1,829.2m
-- including 15.9m @ 1.9g/t Au & 1.6% Cu from 1,853.1m.
South-East Crescent
-- HAD108AW1
-- 93.3m @ 3.6g/t Au & 0.11% Cu from 599.7m
-- including 12.4m @ 10.0g/t & 0.38% Cu.
-- HAD153
-- 44.9m @ 2.5g/t Au & 0.14% Cu from 1,577.1m
-- including 25m @ 4.1g/t Au & 0.09% Cu from 1,585m.
Northern Breccia
-- HAD055W7
-- 70.9m @ 2.0g/t Au & 0.11% Cu from 973.8m
-- including 1.4m @ 45.0g/t Au & 0.21% Cu from 1,043.3m
-- HAD055W9
-- 89.0m @ 0.86g/t Au & 0.16% Cu from 835m
-- including 10m @ 1.7g/t Au & 0.37% Cu from 873m
In addition to this release, a PDF version of this report with
supplementary information can be found at the Company's website:
https://greatlandgold.com/investors/regulatory-news/
Enquiries:
Greatland Gold PLC +44 (0)20 3709 4900
Shaun Day info@greatlandgold.com
www.greatlandgold.com
SPARK Advisory Partners Limited (Nominated
Adviser)
Andrew Emmott/James Keeshan +44 (0)20 3368 3550
Berenberg (Joint Corporate Broker and Financial
Adviser)
Matthew Armitt/ Jennifer Lee/ Jack Botros +44 (0)20 3207 7800
Canaccord Genuity (Joint Corporate Broker
and Financial Adviser)
James Asensio/Patrick Dolaghan +44 (0)20 7523 8000
Hannam & Partners (Joint Corporate Broker
and Financial Adviser)
Andrew Chubb/Matt Hasson/Jay Ashfield +44 (0)20 7907 8500
SI Capital Limited (Joint Broker)
Nick Emerson/ Sam Lomanto +44 (0)14 8341 3500
Luther Pendragon (Media and Investor Relations)
Harry Chathli/Alexis Gore +44 (0)20 7618 9100
Further Information on Drilling and Operations at Havieron
The Havieron gold-copper deposit is centered on a deep magnetic
anomaly located 45km east of Telfer in the Paterson Province where
exploration drilling by Greatland during 2018 resulted in the
discovery of gold and copper ore under 420 metres of post
mineralisation cover. The Joint Venture commenced drilling during
the June 2019 quarter and has completed 249,240 metres of drilling
from 306 drill holes to date (excluding holes in progress,
abandoned holes or drill holes not yet sampled).
A further 5,622 metres of drilling from 11 new holes and
extensions to one previously reported hole have been completed
since the last update ("Havieron Exploration and Development
Update", RNS dated 9 June 2022). Assay results are reported from 11
new holes and one previously reported hole. (Figures 1 and 2). 9
holes returned significant assay intercepts in excess of 50 gram
metres Au (Au ppm x length metres).
Growth drilling is focused on potential extensions at the
Southeast Crescent Zone, Northern Breccia and Eastern Breccia,
while regional exploration holes are planned to locate new
discoveries outside the main Havieron mineralised system. Assays
reported include drilling from:
-- South East Crescent Deeps - assay results reported for two
drill holes with one hole awaiting assays.
-- Northern Breccia - assay results are reported for four drill
holes with one hole awaiting assays.
-- Eastern Breccia - assay results reported for six drill holes,
with five holes awaiting assays.
There are now seven drill rigs on site all focused on growth
drilling. The JV is targeting an extensive growth drilling
programme in the 12 months to 30 June 2023 which has the potential
to again expand the Havieron resource. Refer to Appendix 2 for all
reported results.
At the South East Crescent Deeps Target, growth drilling
continued, defining high grade mineralisation below the Updated
Mineral Resource, which remains open at depth. Results were
received from one drill hole - HAD153.
The results returned from HAD108AW1 occurs in the upper part of
the deposit (4650mRL), this area was opportunistically targeted in
the design of HAD108AW1, who's main purpose was testing the upper
limits of the Eastern Breccia. No significant mineralisation was
identified in the Eastern Breccia position of this hole.
Results include:
-- HAD153
-- 44.9m @ 2.5g/t Au & 0.14% Cu from 1,577.1m
-- including 25m @ 4.1g/t Au & 0.09% Cu from 1,585m
-- HAD108AW1
-- 93.3m @ 3.6g/t Au & 0.11% Cu from 599.7m
-- including 12.4m @ 10.0g/t & 0.38% Cu.
At the Northern Breccia infill drilling has confirmed the known
high-grade mineralisation within the core of the Northern Breccia,
adjacent to the high grade South-East Crescent (3500m RL).
Results include:
-- HAD055W7
-- 70.9m @ 2.0g/t Au & 0.11% Cu from 973.8m
-- including 1.4m @ 45.0g/t Au & 0.21% Cu from 1,043.3m
-- HAD055W9
-- 89.0m @ 0.86g/t Au & 0.16% Cu from 835m
-- including 10m @ 1.7g/t Au & 0.37% Cu from 873m
At the Eastern Breccia, assays for 6 holes targeting strike and
depth extensions from previously reported drill holes have been
received, with assays for 5 holes awaited. The Eastern Breccia is
developed below the 4,100RL with a footprint of over 500m in
strike, up to 200m in width, and over 250m in vertical extent. The
Eastern Breccia remains open at depth. Within this zone multiple
northwest trending internal higher-grade sulphide dominated domains
are observed. Results for the quarter further highlight geological
continuity of higher grade within the Eastern Breccia.
Results include:
-- HAD104W2
-- 51m @ 1.1g/t Au & 0.07% Cu from 1,496m
-- HAD141W2^
-- 39m @ 2.8g/t Au & 0.15% Cu from 1,824.6m
-- including 13.8m @ 7.6g/t Au & 0.15% Cu from 1,849.8m
-- HAD145AW4
-- 54m @ 3.8g/t Au & 0.02% Cu from 1,854m
-- including 19.6m @ 9.9g/t Au & 0.02% Cu from 1,854m
-- HAD152W1
-- 82.3m @ 1.7g/t Au & 0.96% Cu from 1,829.2m
-- including 15.9m @ 1.9g/t Au & 1.6% Cu from 1,853.1m.
The JV is targeting an extensive growth drilling programme in
the 12 months to 30 June 2023 which has the potential to further
expand the Havieron resource. Growth drilling continues to show
potential for resource additions outside of the existing Inferred
Mineral Resource limits, including:
-- Extension of the South-East Crescent Zone at depth below the
Updated Mineral Resource;
-- Potential for additional material in the Eastern Breccia,
including higher grade "Crescent" like material, currently open
along strike and at depth;
-- Expansion of multiple higher-grade zones including Northern
Breccia and North-West Pod; and,
-- Additionally, drilling is continuing to test geophysical
targets outside of the main Havieron system.
Refer to Appendix 1 for additional information and Appendix 2
for all drillhole results reported during the period.
Development Update
Newcrest has advised advance rates associated with the
exploration decline have increased after c hanges in the design of
the decline brought forward the first downward spiral to the
current advance position. This has allowed the decline to
transition into better ground conditions earlier.
Works are also ongoing to progress the necessary approvals and
permits required to commence construction of the infrastructure
which will support production at Havieron. Newcrest is reviewing
the impact of inflationary pressures on future capital expenditure
and operating costs as part of the Feasibility Study, with value
engineering and other cost mitigation strategies underway.
Background to Havieron and Joint Venture Agreement with
Newcrest
The Havieron copper-gold project is operated by Newcrest under a
Joint Venture Agreement with Greatland. Newcrest has earned a joint
venture interest of 70% (30% Greatland). Newcrest may also acquire
an additional 5% joint venture interest at fair market value (under
the principles of the Joint Venture Agreement) and, if exercised,
Newcrest will be entitled to an overall joint venture interest of
75% (Greatland 25%). Greatland and Newcrest continued to progress
the process to determine the option price for the 5% interest in
accordance with the Joint Venture Agreement during the period.
The Joint Venture Agreement includes tolling principles
reflecting the intention of the parties that, subject to a
successful exploration programme and feasibility study and a
positive decision to mine, the resulting joint venture mineralised
material will be processed at Telfer, located 45km west of
Havieron.
A regional map showing the Havieron licence area with regional
targets and adjacent landholdings can be found at:
www.greatlandgold.com/paterson
A version of this release with the full images and diagrams can
be found on the Company's website:
https://greatlandgold.com/investors/regulatory-news/
Figure 1 . 3D Plan view schematic showing the spatial
association of the current growth targets, SE Crescent, Northern
Breccia, NW Pod and Eastern Breccia targets in relation to the
existing mineralised extents. Also highlighted are selected newly
reported growth drilling results.
Figure 2 . Schematic plan view map showing drill hole locations
and significant intercepts reported in this release superimposed on
the interpreted geology. Previously reported holes are not shown
for the sake of clarity. Note some holes and results appear on
multiple sections due to the sections orientation and sections
overlap.
Figure 3 . Plan view schematic of a horizontal slice at 3850mRL
through the Crescent Sulphide Zone and Breccia-hosted Zones,
showing the extents of the 0.5 and 1.0 g/t Au LeapfrogTM grade
shells with highlighted newly reported intercepts for this period.
This diagram highlights >50gram metres intersections drilled
during the period, refer to inset diagram for relationship to all
Havieron drilling.
Figure 4 . Schematic cross section of geology and significant
new drillhole intercepts (looking northwest, Section Line S1, +/-
100m section width, as shown in Figure 2 ). Due to section window
size and orientation holes may appear on multiple sections. This
diagram highlights >50gram metres intersections drilled during
the period.
Figure 5 . Schematic cross section of geology and significant
new drillhole intercepts (looking northeast, Section Line S2, +/-
75m section width , as shown in Figure 2 . Due to section window
size and orientation holes may appear on multiple sections. This
diagram highlights >50gram metres intersections drilled during
the period.
Figure 6 . Schematic cross section of geology and significant
new drillhole intercepts (looking northeast, Section Line S3, +/-
75m section width, as shown in Figure 2). Due to section window
size and orientation holes may appear on multiple sections. This
diagram highlights >50gram metres intersections drilled during
the period.
Competent Person:
Information in this announcement that relates to exploration
results has been extracted from the following announcements:
"Quarterly Exploration Report", dated 21 July 2022 (Newcrest)
"Havieron Exploration and Development Update", dated 9 June
2022 (Greatland)
"Havieron Exploration and Development Update", dated 28 April
2022 (Greatland)
"Quarterly Exploration Report", dated 28 April 2022 (Newcrest)
"Havieron Growth Drilling Update", dated 10 March 2022 (Greatland)
"Havieron Resource and Reserves Update", dated 3 March 2022
(Greatland)
"Havieron Exploration Update", dated 28 January 2022 (Greatland)
"Quarterly Exploration Report", dated 28 January 2022 (Newcrest)
"Havieron Exploration and Development Update", dated 9 December
2021 (Greatland)
"Exploration Update", dated 9 December 2021 (Newcrest)
"Havieron Exploration and Development Update", dated 28 October
2021 (Greatland)
"Quarterly Exploration Report", dated 28 October 2021 (Newcrest)
"Havieron Development and Exploration Update" dated 9 September
2021 (Greatland)
"Exploration Update", dated 9 September 2021 (Newcrest)
"Havieron Development and Exploration Update" dated 22 July
2021 (Greatland)
"Quarterly Exploration Report", dated 22 July 2021 (Newcrest)
"Further Excellent Growth Drilling Results at Havieron", dated
10 June 2021 (Greatland)
"Exploration Update", dated 10 June 2021 (Newcrest)
"Excellent Growth Drilling Results at Havieron", dated 29
April 2021 (Greatland)
"Quarterly Exploration Report", dated 29 April 2021 (Newcrest)
"Further Outstanding Infill Drilling Results at Havieron",
dated 11 March 2021 (Greatland)
"Exploration Update", dated 11 March 2021 (Newcrest)
"Newcrest Reports Further Drilling Results at Havieron", dated
28 January 2021 (Greatland)
"Quarterly Exploration Report", dated 28 January 2021 (Newcrest)
"Newcrest Reports Further Drilling Results at Havieron", dated
10 December 2020 (Greatland)
"Exploration Update", dated 10 December 2020 (Newcrest)
"Initial Inferred Mineral Resource Estimate for Havieron",
dated 10 December 2020 (Greatland)
"Initial Inferred Mineral Resource Estimate for Havieron",
dated 10 December 2020 (Newcrest)
"Drilling Results at Havieron Highlight Potential New Eastern
Breccia Target", dated 29 October 2020 (Greatland)
"Quarterly Exploration Report", dated 29 October 2020 (Newcrest)
"Latest Drilling Results at Havieron Highlight Potential Bulk
Tonnage Target", dated 10 September 2020 (Greatland)
"Exploration Update", dated 10 September 2020 (Newcrest)
"Newcrest Identifies New Zone of Breccia Mineralisation at
Havieron", dated 23 July 2020 (Greatland)
"Quarterly Exploration Report", dated 23 July 2020 (Newcrest)
"Further Outstanding Drill Results from Havieron", dated 11
June 2020 (Greatland)
"Exploration Update", dated 11 June 2020 (Newcrest)
"Newcrest Reports Further Outstanding Drill Results at Havieron",
dated 30 April 2020 (Greatland)
"Quarterly Exploration Report", dated 30 April 2020 (Newcrest)
"Newcrest Reports Further Outstanding Drill Results at Havieron",
dated 11 March 2020 (Greatland)
"Exploration and Guidance Update", dated 11 March 2020 (Newcrest)
"Further Outstanding Drill Results at Havieron", dated 30
January 2020 (Greatland)
"Quarterly Exploration Report", dated 30 January 2020 (Newcrest)
"New Outstanding Drill Results at Havieron Extend the Strike
Length of High-Grade Mineralisation", dated 2 December 2019
(Greatland)
"Exploration Update - Havieron", dated 2 December 2019 (Newcrest)
"Further High-Grade Drilling Results from Newcrest's Campaign
at Havieron", dated 24 October 2019 (Greatland)
"Quarterly Exploration Report - September 2019", dated 24
October 2019 (Newcrest)
"Update on Newcrest Drilling Results at Havieron", dated 10
September 2019 (Greatland)
"Exploration Update - Havieron", dated 10 September 2019 (Newcrest)
"First Results from Newcrest's Drilling Campaign at Havieron",
dated 25 July 2019 (Greatland)
"Newcrest Quarterly Exploration Report - June 2019", dated
25 July 2019 (Newcrest)
Information in this announcement has been reviewed and approved
by Mr Damien Stephens, a Member of the Australian Institute
of Mining and Metallurgy (AUSIMM), who has more than 25 years
relevant industry experience. Mr Stephens, an employee of
the Company, has sufficient experience relevant to the style
of mineralisation, type of deposit under consideration, and
to the activity which he is undertaking to qualify as a Competent
Person as defined by the 2012 Edition of the Australasian
Code for Reporting of Exploration Results, Mineral Resources
and Ore Reserves (the JORC Code) and under the AIM Rules -
Note for Mining and Oil & Gas Companies, which outline standards
of disclosure for mineral projects. Mr Stephens consents to
the inclusion in this announcement of the matters based on
this information in the form and context in which it appears.
Mr Stephens confirms that the Company is not aware of any
new information or data that materially affects the information
included in the relevant market announcements, and that the
form and context in which the information has been presented
has not been materially modified.
Additional information on the project can be found on the
Company's website at https://greatlandgold.com/projects/havieron/
In addition to this release, a PDF version of this report
with supplementary information can be found at the Company's
website: www.greatlandgold.com/media/jorc
Notes for Editors:
Greatland Gold plc (AIM:GGP) is a mining development and exploration
company with a focus on precious and base metals. The Company's
flagship asset is the world class Havieron goldcopper deposit
in the Paterson region of Western Australia, discovered by
Greatland and presently under development in Joint Venture
with Newcrest Mining Ltd.
Havieron is located approximately 45km east of Newcrest's
Telfer gold mine and, subject to positive decision to mine,
will leverage the existing infrastructure and processing plant
to significantly reduce the project's capital expenditure
and carbon impact for a low-risk and lowcost pathway to development.
Construction of the box cut and decline to develop the Havieron
deposit commenced in February 2021. An extensive growth drilling
programme is presently underway at Havieron with a view to
further expanding the understanding and scale of the ore body.
Greatland has a proven track record of discovery and exploration
success. It is pursuing the next generation of tier-one mineral
deposits by applying advanced exploration techniques in under-explored
regions. The Company is focused on safe, low-risk jurisdictions
and is strategically positioned in the highly prospective
Paterson region. Greatland has a total six projects across
Australia with a focus on becoming a multi-commodity mining
company of significant scale.
APPIX I
Havieron Project (Greatland Gold plc - Newcrest Joint Venture ):
JORC Table 1
Section 1 Sampling Techniques and Data
Criteria Commentary
================== ====================================================================
Core
Sampling samples
techniques are
obtained
from
core
drilling
in
Proterozoic
basement
lithologies.
PQ-HQ
and
NQ
diameter
core
was
drilled
on
a
6m
run.
Core
was
cut
using
an
automated
core-cutter
and
half
core
sampled
at
1m
intervals
with
breaks
for
major
geological
changes.
Sampling
intervals
range
from
0.2
-
1.0m.
Cover
sequences
were
not
sampled.
--------------------------------------------------------------------
Drilling Permian Paterson Formation cover sequence was drilled
techniques using mud rotary drilling. Depths of cover typically
observed to approximately 420m vertically below surface.
Steel casing was emplaced to secure the pre-collar.
Core drilling was advanced from the base of the cover
sequence with PQ3, HQ3 and NQ2 diameter coring configuration.
Core from inclined drill holes is oriented on 3m and
6m runs using an electronic core orientation tool (Reflex
ACTIII or equivalent). At the end of each run, the bottom
of hole position is marked by the driller, which is
later transferred to the whole drill core run length
with a bottom of hole reference line.
--------------------------------------------------------------------
Drill sample Core recovery is systematically recorded from the commencement
recovery of coring to end of hole, by reconciling against driller's
depth blocks in each core tray with data recorded in
the database. Drillers depth blocks provided the depth,
interval of core recovered, and interval of core drilled.
Core recoveries were typically 100%, with isolated zones
of lower recovery.
Cover sequence drilling by the mud-rotary drilling did
not yield recoverable samples.
--------------------------------------------------------------------
Logging Geological logging recorded qualitative descriptions
of lithology, alteration, mineralisation, veining, and
structure (for all core drilled - 10,217 m for 21 drill
holes, all intersecting mineralisation), including orientation
of key geological features.
Geotechnical measurements were recorded including Rock
Quality Designation (RQD) fracture frequency, solid
core recovery and qualitative rock strength measurements.
Magnetic susceptibility measurements were recorded every
metre. The bulk density of selected drill core intervals
was determined at site on whole core samples.
All geological and geotechnical logging was conducted
at the Havieron site.
Digital data logging was captured on diamond drill core
intervals only, and all data validated and stored in
an acQuire database.
All drill cores were photographed, prior to cutting
and/or sampling the core.
The logging is of sufficient quality to support Mineral
Resource estimates.
--------------------------------------------------------------------
Sub-sampling Sampling, sample preparation and quality control protocols
techniques are considered appropriate for the material being sampled.
and sample Core was cut and sampled at the Havieron core processing
preparation facility. Half core samples of between 0.2 and 2.0 m
were collected in pre-numbered calico bags and grouped
in plastic bags for dispatch to the laboratory. Sample
weights typically varied from 0.5 to 8kg. Sample sizes
are considered appropriate for the style of mineralisation.
Drill core samples were freighted by air and road to
the laboratory.
Sample preparation was conducted at the independent
I SO17025 accredited Intertek Laboratory, Perth (Intertek).
Samples were dried at 105(o) C, and crushed to 95% passing
4.75mm, and the split to obtain up to 3kg sub-sample,
which was pulverised (using LM5) to produce a pulped
product with the minimum standard of 95% passing 106<MU>m.
Routine grind size analysis is conducted.
Duplicate samples were collected from crush and pulp
samples at a rate of 1:20. Duplicate results show an
acceptable level of variability for the material sampled
and style of mineralisation.
Periodic size checks (1:20) for crush and pulp samples
and sample weights are provided by the laboratory and
recorded in the acQuire database.
--------------------------------------------------------------------
Quality of Assaying of drill core samples was conducted at Intertek.
assay data All samples were assayed for 48 elements using a 4-acid
and laboratory digestion followed by ICP-AES/ICP-MS determination (method
tests 4A/MS907), which is considered to provide a total assay
for copper. Gold analyses were determined by 50g fire
assay with AAS finish (method FA50N/AA), which is considered
to provide a total assay for gold.
Sampling and assaying quality control procedures consisted
of inclusion of certified reference material (CRMs),
coarse residue and pulp duplicates with each batch (at
least 1:20).
Assays of quality control samples were compared with
reference samples in acQuire database and verified as
acceptable prior to use of data from analysed batches.
Laboratory quality control data, including laboratory
standards, blanks, duplicates, repeats and grind size
results are captured in the acQuire database and assessed
for accuracy and precision for recent data.
Extended quality control programs including pulp samples
submitted to an umpire laboratory and combined with
more extensive re-submission programs have been completed.
Analysis of the available quality control sample assay
results indicates that an acceptable level of accuracy
and precision has been achieved and the database contains
no analytical data that has been numerically manipulated.
The assaying techniques and quality control protocols
used are considered appropriate for the data to be used
for reporting exploration drilling results.
--------------------------------------------------------------------
Verification Sampling intervals defined by the geologist are electronically
of sampling assigned sample identification numbers prior to core
and assaying cutting. Corresponding sample numbers matching pre-labelled
calico bags are assigned to each interval.
All sampling and assay information were stored in a
secure acQuire database with restricted access.
Electronically generated sample submission forms providing
the sample identification number accompany each submission
to the laboratory. Assay results from the laboratory
with corresponding sample identification are loaded
directly into the acQuire database.
Assessment of reported significant assay intervals was
verified by re-logging of diamond drill core intervals
and assessment of high resolution core photography.
The verification of significant intersections has been
completed by company personnel and the Competent Person/Qualified
Person.
No adjustments are made to assay data, and no twinned
holes have been completed.
There are no currently known drilling, sampling, recovery,
or other factors that could materially affect the accuracy
or reliability of the data.
--------------------------------------------------------------------
Location Drill collar locations were surveyed using a differential
of data points GPS with GNSS with a stated accuracy of +/- 0.5m for
all drill holes reported.
Drill rig alignment was attained using an electronic
azimuth aligner. Downhole survey was collected at 6-12m
intervals in the cover sequence, and every 6 to 30m
in diamond drill core segments of the drill hole using
single shot (Axis Mining Champ Gyro). The single shot
surveys have been validated using continuous survey
to surface (Axis Mining Champ) along with a selection
of drill holes re-surveyed by an external survey contactor
using a DeviGyro tool - confirming sufficient accuracy
for downhole spatial recording.
A LIDAR survey was completed over the project area in
Nov 2019 which was used to prepare a DEM / topographic
model for the project with a spatial accuracy of +/-
0.1m vertical and +/- 0.3m horizontal. The topography
is generally low relief to flat, elevation within the
dune corridors in ranges between 250-265m Australian
Height Datum (AHD) steepening to the southeast. All
collar coordinates are provided in the Geocentric Datum
of Australian (GDA20 Zone 51). All relative depth information
is reported in AHD +5000m.
--------------------------------------------------------------------
Data spacing Within the South-East Crescent and Breccia zone drill
and distribution hole spacing ranges from 50 to 100m, to 50 by 50m within
the resource extents. Outside the initial resource boundary
drill hole spacing ranges from 50 to 200m in lateral
extent within the breccia zone over an area of 2km(2)
. The data spacing is sufficient to establish the degree
of geological and grade continuity.
Significant assay intercepts remain open. Further drilling
is required to determine the extent of currently defined
mineralisation. No sample compositing is applied to
samples.
Drilling intersects mineralisation at various angles.
--------------------------------------------------------------------
Orientation Drill holes exploring the extents of the Havieron mineral
of data in system intersect moderately dipping carbonate and siliclastic
relation to sedimentary facies, mineralised breccia and sub-vertical
geological intrusive lithologies. Geological modelling has been
structure interpreted from historic and Newcrest drill holes.
Variable brecciation, alteration and sulphide mineralisation
is observed with a footprint with dimensions of 650m
x 350m trending in a north west orientation and over
1000m in vertical extent below cover.
The subvertical southeast high grade arcuate crescent
sulphide zone has an average thickness of 20m and has
been defined over a strike length of up to 550m and
extended to over 700m in vertical extent below cover.
Drilling direction is oriented to intersect the steeply
dipping high-grade sulphide mineralisation zones at
an intersection angle of greater than 40 degrees. The
drilled length of reported intersections is typically
greater than true width of mineralisation.
--------------------------------------------------------------------
Sample security The security of samples is controlled by tracking samples
from drill rig to database.
Drill core was delivered from the drill rig to the Havieron
core yard every shift. On completion of geological and
geotechnical logging, core processing was completed
by Newcrest personnel at the Havieron facility.
High resolution core photography and cutting of drill
core was undertaken at the Havieron core processing
facilities.
Samples were freighted in sealed bags by air and road
to the Laboratory, and in the custody of Newcrest representatives.
Sample numbers are generated directly from the database.
All samples are collected in pre-numbered calico bags.
Verification of sample numbers and identification is
conducted by the laboratory on receipt of samples, and
sample receipt advise issued to Newcrest.
Details of all sample movement are recorded in a database
table. Dates, Hole ID sample ranges, and the analytical
suite requested are recorded with the dispatch of samples
to analytical services. Any discrepancies logged at
the receipt of samples into the analytical services
are validated.
--------------------------------------------------------------------
Audits or Internal reviews of core handling, sample preparation
reviews and assays laboratories were conducted on a regular
basis by both project personnel and owner representatives.
In the Competent Person's opinion, the sample preparation,
security and analytical procedures are consistent with
current industry standards and are entirely appropriate
and acceptable for the styles of mineralisation identified
and will be appropriate for use in the reporting of
exploration results and Mineral Resource estimates.
There are no identified drilling, sampling or recovery
factors that materially impact the adequacy and reliability
of the results of the drilling programme in place at
the Havieron Project.
--------------------------------------------------------------------
Section 2 Reporting of Exploration Results
Criteria Commentary
Mineral tenement The Havieron Project is entirely contained within mining
and land tenure tenement M45/1287, which is jointly owned by Greatland
status Pty Ltd and Newcrest Operations Limited. Newcrest has
entered into a Joint Venture Agreement (effective 30
November 2020) and Farm-In Agreement (effective 12 March
2019) with Greatland Pty Ltd and Greatland Gold plc.
Newcrest is the Manager of the Havieron Project and
holds a 70% interest in the Havieron Project with an
option to acquire a further 5% joint venture interest.
Newcrest and Jamukurnu-Yapalikurnu Aboriginal Corporation
(formerly WDLAC) are parties to an ILUA which relates
to the use of native title land for Newcrest's current
operations at Telfer and its activities within a 60km
radius around Telfer and includes its exploration activities
at Havieron. The parties have agreed that the ILUA will
apply to any future development activities by the Joint
Venture Participants (Newcrest and Greatland Gold) at
Havieron.
The mining tenement M45/1287 wholly replaces the 12
sub-blocks of exploration tenement E45/4701 (former
part of the exploration tenement on which the Havieron
Project is based) and was granted on 10 September 2020.
-------------------------------------------------------------------
Exploration Newcrest completed six core holes in the vicinity of
done by other the Havieron Project from 1991 to 2003. Greatland Gold
parties completed drill targeting and drilling of nine Reverse
Circulation (RC) drill holes with core tails for a total
of approximately 6,800m in 2018. Results of drilling
programs conducted by Greatland Gold have previously
been reported on the Greatland Gold website.
Drilling has defined an intrusion-related mineral system
with evidence of breccia and massive sulphide-hosted
higher-grade gold-copper mineralisation.
-------------------------------------------------------------------
Geology The Havieron Project is located within the north-western
exposure of the Palaeo-Proterozoic to Neoproterozoic
Paterson Orogen (formerly Paterson Province), 45 km
east of Telfer. The Yeneena Supergroup hosts the Havieron
prospect and consists of a 9km thick sequence of marine
sedimentary rocks and is entirely overlain by approximately
420m of Phanerozoic sediments of the Paterson Formation
and Quaternary aeolian sediments.
Gold and copper mineralisation at Havieron consist of
breccia, vein and massive sulphide replacement gold
and copper mineralisation typical of intrusion-related
and skarn styles of mineralisation. Mineralisation is
hosted by metasedimentary rocks (meta-sandstones, meta-siltstones
and meta-carbonate) and intrusive rocks of an undetermined
age. The main mineral assemblage contains well developed
pyrrhotite-chalcopyrite and pyrite sulphide mineral
assemblages as breccia and vein infill, and massive
sulphide lenses. The main mineralisation event is associated
with amphibole-carbonate-biotite-sericite-chlorite wall
rock alteration. Drilling has partially defined the
extents of mineralisation which are observed over 650m
by 350m within an arcuate shaped mineralised zone, and
to depths of up to 1400m below surface.
-------------------------------------------------------------------
Drill hole As provided.
Information
-------------------------------------------------------------------
Data aggregation Significant assay intercepts are reported as (A) length-weighted
methods averages exceeding 1.0g/t Au greater than or equal to
10m, with a maximum of 5m consecutive internal dilution;
and (B) length-weighted averages exceeding 0.2g/t Au
for greater than or equal to 20m, with a maximum of
10m consecutive internal dilution, and (C) intervals
of >30g/t which are greater or equal to 30 gram metres
(Au_ppm x length). No top cuts are applied to intercept
calculations.
-------------------------------------------------------------------
Relationship Significant assay intervals reported represent apparent
between mineralisation widths. Drilling is not always perpendicular to the
widths and dip of mineralisation and true widths are less than
intercept downhole widths. Estimates of true widths will only
lengths be possible when all results are received, and final
geological interpretations have been completed.
-------------------------------------------------------------------
Diagrams As provided.
-------------------------------------------------------------------
Balanced reporting This is the twenty-third release of Exploration Results
for this project made by Newcrest. Previous release
dates are 25 July 2019, 10 September 2019, 24 October
2019, 2 December 2019, 30 January 2020, 11 March 2020,
30 April 2020, 11 June 2020, 23 July 2020, 10 September
2020, 29 October 2020, 10 December 2020, 28 January
2021, 11 March 2021, 29 April 2021, 10 June 2021, 22
July 2021, 9 September 2021, 28 October 2021, 9 December
2021, 28 January 2022, and 28 April 2022.
Earlier reporting of exploration programs conducted
by Newcrest and Greatland Gold have previously been
reported. Exploration drilling programs are ongoing
and further material results will be reported in subsequent
Newcrest releases.
-------------------------------------------------------------------
Other substantive Nil
exploration
data
-------------------------------------------------------------------
Further work Growth drilling is planned to extend the December 2020
Inferred Mineral Resource estimate and define the limits
of the Havieron mineralised system.
-------------------------------------------------------------------
APPIX II
Drillhole Data and Au- Cu Significant Intersections
Havieron Project, Paterson Province, Western Australia
Reporting Criteria: Intercepts reported are downhole drill width
(not true width) Au >0.20ppm (0.2g/t Au) and minimum 20m
downhole width with maximum consecutive internal dilution of 10m.
Average grades are based on length-weighting of samples grades.
Also highlighted are high grade intervals of Au >1.0ppm (1g/t
Au) and minimum 10m downhole width with maximum consecutive
internal dilution of 5m, and intervals of >30g/t which are
greater or equal to 30 gram metres (Au_ppm x length) are tabled.
Gold and copper grades are reported to two significant figures, the
downhole lengths are rounded to 0.1m which may cause some apparent
discrepancies in interval widths. Samples are from core drilling
which is PQ, HQ or NQ in diameter. Core is photographed and logged
by the geology team before being cut. Half core PQ, HQ and NQ
samples are prepared for assay and the remaining material is
retained in the core farm for future reference. Each assay batch is
submitted with duplicates and standards to monitor laboratory
quality. Total depth (end of hole) is rounded to one decimal place
for reporting purposes. Collars denoted with a * show partial
results, with further significant assays to be reported in
subsequent exploration updates.
Hole Hole Easting Northing RL Total Azimuth From To Interval Au Cu Cut
Type (m) (m) (m) Depth Dip (m) (m) (m) (ppm) (pct) off
(m)
0.2
g/t
HAD055W7 MR-DD 463715 7597341 263 1075.2 47 -56 973.8 1044.7 70.9(+) 2.0 0.11 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
30 g.m.
incl. 1043.3 1044.7 1.4(+) 45 0.21 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
HAD055W8 MR-DD 463715 7597341 263 1749.8 47 -56 No Significant Result
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
0.2
g/t
HAD055W9 MR-DD 463715 7597341 263 1251.1 47 -56 835.0 924.0 89.0(+) 0.86 0.16 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 841.8 852.4 10.6(+) 1.5 0.41 Au
------------------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 873 883 10(+) 1.7 0.37 Au
------------------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
935 985.3 50.3(+) 0.70 0.01 Au
------------------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
1009 1100 91(+) 1.7 0.10 Au
------------------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
HAD055W10 MR-DD 463715 7597341 263 1249 47 -56 Assays Pending
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
HAD055W11 MR-DD 463715 7597341 263 1635.9 47 -56 Assays Pending
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
0.2
g/t
HAD098W1 MR-DD 463591 7597381 264 1690.7 38 -61 780 829 49 0.23 0.03 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
940.1 965.8 25.7 0.98 0.06 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
1003 1084.1 81.1 0.39 0.11 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
1103.2 1141 37.8 0.30 0.02 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
1154.6 1187.6 33 0.96 0.20 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 1175.2 1187.6 12.4 1.9 0.20 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
HAD098W2 MR-DD 463591 7597381 264 1748.4 38 -61 Assays Pending
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
0.2
g/t
HAD104W2 MR-DD 463522 7597782 257 1754 87 -63 1496 1547 51 1.1 0.07 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
HAD104W3 MR-DD 463522 7597782 257 1965 87 -63 Assays Pending
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
0.2
g/t
HAD108AW1 MR-DD 463749 7597401 260 1648.3 42 -56 599.7 693 93.3(+) 3.6 0.11 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 618.6 631 12.4(+) 10 0.38 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
30 g.m.
incl. 623.9 624.9 1.0(+) 78 0.54 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
30 g.m.
incl. 649.5 650.3 0.8(+) 173 0.25 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
706.3 754.6 48.3(+) 1.4 0.19 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
769.1 855.6 86.5(+) 0.72 0.08 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 780.4 794.3 13.9(+) 2.8 0.08 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
921.2 965.4 44.2 0.53 0.07 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
HAD138AW2 MR-DD 463447 7597869 256 1686.1 76 -56 827 866.3 39.3 0.79 0.07 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
HAD141W2^ MR-DD 463361 7597505 263 1906 27 -65 1738 1792.6 54.6 0.71 0.08 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
1824.6 1863.6 39.0 2.9 0.15 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 1849.8 1863.6 13.8 7.8 0.15 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
HAD145AW2 MR-DD 463201 7597816 256 1277 74 -65 No Significant Result
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
HAD145AW3 MR-DD 463201 7597816 256 1560.6 74 -65 Assays Pending
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
HAD145AW4 MR-DD 463201 7597816 256 1912.7 74 -65 1645.0 1765.1 120.1 0.39 0.18 0.2
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
incl. 1727.0 1739.0 12.0 1.2 0.28 1.0
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1787 1814.8 27.8 0.38 0.03 0.2
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1854 1908.0 54.0 3.8 0.02 0.2
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
incl. 1854.0 1873.6 19.6 9.9 0.02 1.0
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
30 g.m.
Incl. 1855.7 1856.9 1.2 75 0.02 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
HAD152W1 MR-DD 463402 7597058 254 1911.8 29 -62 1634.6 1724 89.4 0.65 0.21 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 1703.3 1714 10.7 2.2 0.55 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
1735.4 1799 63.6 0.91 0.08 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 1755.9 1766 10.1 4.3 0.17 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
0.2
g/t
1829.2 1911.5 82.3 1.7 0.96 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
incl. 1853.1 1869 15.9 1.9 1.6 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
HAD152W2 MR-DD 463402 7597058 254 1898 29 -62 Assays Pending
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
0.2
g/t
HAD153 MR-DD 464786 7598418 269 1647.8 201 -60 1577.1 1622 44.9 2.5 0.14 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
1.0
g/t
Incl. 1585 1610 25 4.1 0.09 Au
------------ ------- -------- --------- ---- ------- -------- ------- ------- ------- --------- ------ ------ --------
HAD153W1 MR-DD 464786 7598418 269 1691 201 -60 Assays Pending
------------ ------- -------- --------- ---- ------- -------- ------- -----------------------------------------------------
(#) drilling in progress. **partial intercept, assays pending.
^updated intercept. ^^previously reported intercept.
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