REG - Greatland Gold PLC - Havieron Exploration and Development Update
09/06/2022 07:00
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RNS Number : 2918O Greatland Gold PLC 09 June 2022
9 June 2022
THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION AS STIPULATED UNDER THE UK
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Greatland Gold plc
("Greatland" or "the Company")
Havieron Exploration and Development Update
South East Crescent high grade zone extended which following recent Growth
Drilling
is now identified at extending over 1,000 metres of continuous mineralisation,
and remains open
High grade results within the Northern Breccia continue to demonstrate the
potential for
further high-grade mineralisation adjacent to the South East Crescent Zone
Extensive Growth Drilling programme planned across the next twelve months,
which provides substantial opportunity to expand Havieron
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.
Highlights
§ Seven drill rigs currently onsite, all focused on growth targeting:
§ South East Crescent: continuous mineraliation 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)
§ Eastern Breccia: drilling continuing to define the greater mineralised
footprint of the Eastern Breccia, including definition of higher-grade zones
recently announced
§ Northern Breccia: drilling aimed at extending high-grade zones of
mineralisation at depth
§ New Targets: drilling continuing to define geophysical targets outside of
the main Havieron system with follow-up drilling planned at regional targets
on the Havieron mining lease
New drilling results
§ Drilling in the South East Crescent 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:
§ HAD133W9 returned 85.8m @ 3.0g/t Au & 0.06% Cu from 1,604m and 25.3m @
1.1g/t Au & 0.08% Cu from 1,471.1m
§ High grade results in the Northern Breccia reinforce the potential for
further high-grade sulphide mineralisation adjacent to the South East Crescent
Zone:
§ HAD055W4 returned 149.9m @ 2.7 g/t Au & 0.12% Cu from 877.4m,
§ Including 13.9m @ 22.8 g/t Au & 0.46% Cu from 1,013.4m
§ HAD055W5 returned 39.6m @ 2.8 g/t Au & 0.07% Cu from 983.6m,
§ Including 0.5m @ 96.0 g/t Au & 0.10% Cu from 1,020.7m
§ Early Works improvements: Construction activities by Newcrest are
progressing including:
§ An exploration decline advance of 377.5 metres as at end of May 2022
§ Fuel facility fully commissioned
The decline experienced improved ground conditions in the June quarter.
Advance rates have improved after changes 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. The Havieron
fuel facility has now been completed and commissioned into operation.
§ Feasibility Study work by Newcrest is progressing and key contracts have
been awarded. The Feasibility Study is still forecast to be delivered in the
December 2022 quarter(3).
Shaun Day, Managing Director of Greatland Gold plc, commented: "The growth
drilling programme continues to expand Havieron's mineralised system. The
existing high grade mineralised zone of the South East Crescent now extends a
further 100 metres below our previous Mineral Resource estimate. Testament to
the scale of Havieron, there is now continuous mineralisation observed over
1,000 metres of vertical extent with the system remaining open at depth.
With an extensive growth drilling programme planned over the next twelve
months, there is tremendous potential to further expand the Havieron resource
and unlock the true scale and value of the broader system.
Pleasingly, the decline has encountered better ground conditions, resulting
in recent improvements to the decline advancement rates."
(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
Some statements contained in this announcement are or may be forward-looking
statements. Actual results may differ from those expressed in such statements,
depending on a variety of factors
Significant New Results (intercepts are reported as downhole width not true
width)
South East Crescent
§ HAD133W9
§ 25.3m @ 1.1g/t Au & 0.08% Cu from 1,471.1m,
§ 85.8m @ 3.0g/t Au & 0.06% Cu from 1,604m
Northern Breccia
§ HAD055W4
§ 149.9m @ 2.7 g/t Au & 0.12% Cu from 877.4m,
§ incl. 13.9m @ 22.8 g/t Au & 0.46% Cu from 1,013.4m
§ HAD055W5
§ 76.5m @ 1.1 g/t Au & 0.11% Cu from 892.5m,
§ incl. 11.4m @ 1.9 g/t Au & 0.12% Cu from 921m
§ 39.6m @ 2.8 g/t Au & 0.07% Cu from 983.6m,
§ incl. 0.5m @ 96.0 g/t Au & 0.10% Cu from 1,020.7m
§ HAD055W6
§ 43.2m @ 1.4 g/t Au & 0.08% Cu from 978.3m,
§ incl. 10.9m @ 2.3 g/t Au & 0.05% Cu from 978.3m
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/
(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) +44 (0)20 3368 3550
Andrew Emmott/James Keeshan
Berenberg (Joint Corporate Broker and Financial Adviser) +44 (0)20 3207 7800
Matthew Armitt/Jennifer Lee/Detlir Elezi
Canaccord Genuity (Joint Corporate Broker and Financial Adviser) +44 (0)20 7523 8000
James Asensio/Patrick Dolaghan
Hannam & Partners (Joint Corporate Broker and Financial Adviser) +44 (0)20 7907 8500
Andrew Chubb/Matt Hasson/Jay Ashfield
SI Capital Limited (Joint Broker) +44 (0)14 8341 3500
Nick Emerson/Alan Gunn
Luther Pendragon (Media and Investor Relations) +44 (0)20 7618 9100
Harry Chathli/Alexis Gore/Tan Siddique
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 243,618 metres of
drilling from 295 drill holes to date (excluding holes in progress, abandoned
holes or drill holes not yet sampled).
Drilling activities have produced a further 6,174 metres of drilling from 10
new holes since the last update ("Havieron Exploration and Development
Update", RNS dated 28 April 2022). New assay results are reported from 7
holes. 4 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 South East 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 one drill hole.
§ Northern Breccia - assay results are reported for three drill holes.
§ Eastern Breccia - assay results reported for one drill hole, with five
holes awaiting assays.
§ First pass drill testing of geophysical regional targets outboard of the
Havieron system - two drill holes results from step out drilling north and
south of the Havieron system.
There are now seven rigs on site, and the number of drill holes completed is
expected to increase in future updates. 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 - HAD133W9.
Results from HAD133W9 have extended the Crescent high grade zone by a further
100 metres to over 1,000 vertical metres (3800m RL) of continuous high grade
crescent style mineralisation now defined. Further drilling is planned to test
the potential for high-grade resource extensions for a further vertical
extension of 300m (3500m RL).
Results include:
§ HAD133W9
§ 85.8m @ 3.0g/t Au & 0.06% Cu from 1,604m,
§ 25.3m @ 1.1g/t Au & 0.08% Cu from 1,471.1m
Northern Breccia infill drilling has confirmed known high-grade mineralisation
within the core of the Northern Breccia, adjacent to the high grade South East
Crescent.
Results include:
§ HAD055W4
§ 149.9m @ 2.7 g/t Au & 0.12% Cu from 877.4m,
§ incl. 13.9m @ 22.8 g/t Au & 0.46% Cu from 1,013.4m
§ HAD055W5
§ 76.5m @ 1.1 g/t Au & 0.11% Cu from 892.5m,
§ incl. 11.4m @ 1.9 g/t Au & 0.12% Cu from 921m
§ 39.6m @ 2.8 g/t Au & 0.07% Cu from 983.6m,
§ incl. 0.5m @ 96.0 g/t Au & 0.10% Cu from 1,020.7m
§ HAD055W6
§ 43.2m @ 1.4 g/t Au & 0.08% Cu from 978.3m,
§ incl. 10.9m @ 2.3 g/t Au & 0.05% Cu from 978.3m
At the Eastern Breccia, assays for one additional hole were reported
(HAD104W1) with no significant mineralisation intercepted (Figure 2). This
hole was drilled towards the east, at the junction between the currently
defined Eastern Breccia mineralisation and the base of the South East Crescent
Zone. In addition, 6 new holes were successfully drilled into the Eastern
Breccia complex with assays pending.
Drilling to test geophysical targets outside of the known Havieron system,
including evaluating the Havieron dolerite at multiple intervals north and
south of the Havieron mineralised pipe revealed no significant intercepts from
two drill holes (HAD154 & HAD155). Further drilling is planned external to
Havieron in the coming months.
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 target 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 development of the exploration decline experienced
improved ground conditions in the June quarter. Advance rates have recently
improved after changes in the design of the decline have brought forward the
first downward spiral to the current advance position. This has allowed the
decline to transition into better ground conditions sooner. The Havieron
fuel facility has now been completed and commissioned into operation.
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
(https://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/
(https://greatlandgold.com/investors/regulatory-news/)
Competent Person:
Information in this announcement that relates to exploration results has been
extracted from the following announcements:
"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/
(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 (https://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 gold-copper 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-cost pathway to development.
An extensive growth drilling programme is presently underway at Havieron with
a maiden Pre-Feasibility Study released on the South-East Crescent on 12
October 2021. Construction of the box cut and decline to develop the Havieron
deposit commenced in February 2021.
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.
APPENDIX I
Havieron Project (Greatland Gold plc - Newcrest Joint Venture): JORC Table 1
Section 1 Sampling Techniques and Data
Criteria Commentary
Sampling techniques Samples are obtained from diamond core drilling in Proterozoic basement
lithologies.
Core is cut along the orientation line and one half consistently sampled.
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 or at breaks for
major geological changes. Sampling intervals range from 0.2 - 2.0m. Sample
weights were typically between 0.7 and 5.6 kg. Cover sequences were not
sampled.
Drilling techniques Permian Paterson Formation cover sequence was drilled 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 double tube coring configuration with minor HQ and PQ triple
tube configuration. Navi drilling was undertaken to start wedged holes from
parent holes.
Core from inclined drill holes are 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 recovery Core recovery is systematically recorded from the commencement of coring to
end of hole, by reconciling recovered core measurements against driller's
depth blocks in each core tray, as recorded in the database. Driller's depth
blocks provided the depth, interval of core recovered, and interval of core
drilled. Core recoveries below the cover sequence were typically 100%, with
isolated zones of lower recovery. Cover sequence drilling by the mud-rotary
drilling technique does not yield recoverable samples.
Those sections of wedge holes that were Navi drilled did not produce
recoverable sample material and have not been sampled.
No specific measures have been taken to maximise recovery, other than
employing professional and well respected drillers;
There is no discernible relationship between sample recovery and the grade of
any important variable.
Logging Geological logging recorded qualitative descriptions of lithology, alteration,
mineralisation, veining, and structure, including orientation of key
geological features.
Geotechnical measurements including Rock Quality Designation (RQD) fracture
frequency, solid core recovery and qualitative rock strength measurements were
recorded by Geologists or Geotechnical Engineers.
All geological and geotechnical logging was conducted at the Havieron site.
Magnetic susceptibility measurements were recorded every metre. The bulk
density of selected drill core intervals was determined at site on whole core
samples.
Digital data logging was captured on diamond drill core intervals only, and
all data validated and stored in a Datashed database.
All drill cores were photographed (wet and dry), prior to cutting and/or
sampling the core.
The logging is of sufficient quality to support Mineral Resource estimates,
mining studies and metallurgical studies
100 percent of recovered core in the basement rocks has been logged.
Sub-sampling techniques and sample preparation Core was cut and sampled at the Havieron core processing facilities. Half core
samples were collected in pre-numbered calico bags and grouped into bulk bags
for dispatch to the laboratory. Sample weights typically varied from 0.7 to
5.6kg. Sample sizes are considered appropriate for the style of
mineralisation. Sample lengths typically ranged from 0.2 to 2m with most
samples being 1m in length. Drill core samples were freighted by air and road
to the laboratory.
Navi drilled sections of holes did not produce recoverable material and could
not be sampled.
Sample preparation was conducted at the independent ISO17025 accredited
Intertek Laboratory, Perth (Intertek). Samples were dried at 105(o)C, and
crushed to 95% passing 4.75mm, and then 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 106μm. Routine grind size analysis is conducted.
Duplicate samples were collected from crush and pulp samples at a rate of
1:20.
Coarse Crush and Pulp 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 Datashed database. Field
Duplicate samples are not (routinely) taken.
Sampling and sample preparation sizes and quality control protocols are
considered appropriate to the grain size of the material being sampled.
Quality of assay data and laboratory tests Assaying of drill core samples was conducted at Intertek. All samples were
assayed for 48 elements using a 4-acid digestion followed by ICP-AES/ICP-MS
determination (method 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 the Datashed database and verified as acceptable
prior to use of data from analysed batches. Batches failing QA/QC tests were
re-submitted for assay.
Laboratory quality control data, including laboratory standards, blanks,
duplicates, repeats and grind size results are captured in the Datashed
database and assessed for accuracy and precision for recent data.
Extended quality control programs including pulp samples submitted to an
umpire laboratory.
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 Results and
Mineral Resources.
Verification of sampling and assaying 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 Newcrest personnel and Newcrest's Competent Person/Qualified Person.
No twinned holes have been drilled, however there are many 'wedge/daughter'
holes that provide close-spaced intersections in adjacent holes.
Sampling intervals defined by the geologist are electronically assigned sample
identification numbers prior to core cutting. Corresponding sample numbers
matching pre-labelled calico bags are assigned to each interval.
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 Datashed database.
No adjustments are made to any assay data.
There are no currently known drilling, sampling, recovery, or other factors
that could materially affect the accuracy or reliability of the data.
Location of data points Drill hole collar locations were surveyed using a differential 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 data 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 or equivalent). The single shot surveys
have been validated using continuous survey to surface (Axis Mining Champ or
equivalent) 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.
All collar coordinates are provided in the Geocentric Datum of Australian
(GDA20 Zone 51). All relative depth (RL) information is reported in AHD
+5000m.
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. Easting and
Northing coordinates are provided in the Geocentric Datum of Australian (GDA20
Zone 51) and all vertical level information is reported in AHD +5000m.
Data spacing and distribution Within the South East Crescent Zone, Breccia Zone and Eastern Breccia, drill
hole spacing ranges from 50 by 100m, to 50 by 50m within the current resource
extents. Outside the resource boundary drill hole spacing ranges from 50 to
200m in lateral extent within the Breccia Zone over an area of ~2km2.
Isolated holes test targets away from the Havieron pipe.
The data spacing 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.
Samples have not been composited.
Orientation of data in relation to geological structure Drill holes targeting the Crescent Zone are oriented to intersect the steeply
dipping high-grade sulphide mineralisation zones at an angle of greater than
40 degrees. As such, the drilled length of reported intersections is typically
greater than true width of mineralisation in this Zone. Most of these holes
also intersect the adjacent Breccia Zones.
Drill holes targeting the Breccia Zones are oriented to intersect at angles
either broadly perpendicular to the adjacent Crescent Sulphide Zones, or if
drilling away from the South East Crescent Zone area, at intersections broadly
perpendicular to the elongation of the ovoid breccia body. Given the lower
level of understanding of the breccia geometries it is not possible to
quantify the relationship between drilled and true length of reported
intersections in these Zones.
The attitudes of the South East Crescent Zone and Main (Northern) Breccia Zone
and the variety in drilling orientations through such suggest no sample
orientation related biases affect these zones.
The Eastern Breccia, which is interpreted to strike north-westerly and dip
steeply, is intersected almost exclusively with moderate-steep west-to-east
drilling.
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 initially completed by Newcrest personnel at the Telfer facility but later
done at the Havieron facility once it was operational.
Samples were freighted in sealed bags by air and road to the laboratory, 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 advice 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 reviews Internal reviews by Newcrest (JV Manager) of the core handling, sample
preparation and assays laboratories are conducted on a regular basis by both
project personnel and owner representatives and have not identified any
material issues affecting the reliability of the sampling techniques and data.
In the Competent Person's opinion, the sample preparation, security and
analytical procedures are consistent with current industry standards and are
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. No drilling, sampling or recovery factors that
materially impact the reliability of the results of the drilling programme
have been identified.
Section 2 Reporting of Exploration Results
Criteria Commentary
Mineral tenement and land tenure status The Havieron Project is located within mining tenement M45/1287 and is jointly
owned by Greatland Pty Ltd and Newcrest Operations Limited ("Newcrest").
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 has earned a joint venture interest of 70%
(Greatland 30%). Newcrest also has an option to acquire a further 5% joint
venture interest at fair market value under the principles outlined in the
Joint Venture Agreement.
Newcrest and the JYAC (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 60-km radius around Telfer including 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) at Havieron.
The mining tenement M45/1287 was granted on 10 September 2020.
Exploration done by other parties Newcrest completed six core holes in the vicinity of the Havieron Project from
1991 to 2003. Greatland Gold completed 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 have
previously been reported on the Greatland website.
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 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 a 650m by 350m ovoid area, and to depths of up to
1500m below surface.
Drill hole Information As provided in Appendix II. Refer to previous exploration releases for
drillhole information of the previously reported intercepts highlighted in
this report.
Data aggregation methods Significant assay intercepts are reported as (A) length-weighted 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 with no internal dilution
which are greater or equal to 30 gram metres (Au_ppm x length). No top cuts
are applied to intercept calculations. Refer to previous exploration
releases for drillhole information of the previously reported intercepts
highlighted in this report and used in the Mineral Resource Estimate.
Relationship between mineralisation widths and intercept lengths Significant assay intervals reported represent apparent widths. Drilling is
not always perpendicular to the dip of mineralisation and true widths are less
than downhole widths. Estimates of true widths will only be possible when all
results are received, and final geological interpretations have been
completed.
Diagrams Figures 1 through 5 as provided.
Balanced reporting This is the twenty second release of Exploration Results for this project made
by Newcrest and/ or Greatland Gold. 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 and 9 December 2021, 28
January 2022 and 10 March 2022.
Previous exploration programs conducted by Newcrest and Greatland have been
reported. Exploration drilling programs are ongoing and further material
results will be reported in subsequent releases.
Other substantive exploration data Nil
Further work Growth drilling is underway to extend the limits of the mineralised system at
depth and looking to establish additional resources outside those defined to
date, including extension and infill of the Eastern Breccia and drilling
outside the Havieron mineralised system as defined to date.
APPENDIX II
Drillhole Data and Au- Cu Significant Intersections
Hole ID Hole Type Easting (m) Northing (m) RL (m) Total Depth (m) Azimuth Dip From (m) To (m) Interval (m) Au (ppm) Cu (pct) Cut off
HAD055W4 MR-DD 463715 597341 263 1033 47 -56 877.4 1027.3 149.9 2.7 0.12 0.2 g/t Au
HAD055W4 1013.4 1027.3 13.9 22.8 0.46 1.0 g/t Au
HAD055W4 1017.7 1025.8 8.0 35 0.55 30 g.m. Au
HAD055W5 MR-DD 463715 597341 263 1144.5 47 -56 892.5 969 76.5 1.1 0.11 0.2 g/t Au
HAD055W5 921 932.4 11.4 1.9 0.12 1.0 g/t Au
HAD055W5 983.6 1023.2 39.6 2.8 0.07 0.2 g/t Au
HAD055W5 1020.7 1021.2 0.5 96 0.10 30 g.m. Au
HAD055W6 MR-DD 463715 597341 263 1149.3 47 -56 978.3 1021.5 43.2 1.4 0.08 0.2 g/t Au
HAD055W6 978.3 989.2 10.9 2.3 0.05 1.0 g/t Au
HAD055W7 MR-DD 463715 597341 263 1144.5 47 -56 Assays Pending
HAD055W8 MR-DD 463715 597341 263 1144.5 47 -56 Assays Pending
HAD055W9 MR-DD 463715 597341 263 1144.5 47 -56 Assays Pending
HAD098W1 MR-DD 463590 7597379 263 1690.7 Assays Pending
HAD104W1 MR-DD 463522 7597782 257 1754 No Significant Result
HAD104W2 MR-DD 463522 7597782 257 1754 Assays Pending
HAD108AW1 MR-DD 463748 7597400 260 1648.3 Assays Pending
HAD133W9 MR-DD 464072 598317 257 1720.1 171 -65 1471.1 1496.4 25.3 1.1 0.08 0.2 g/t Au
HAD133W9 1519 1575.8 56.8 0.42 0.03 0.2 g/t Au
HAD133W9 1604 1689.8 85.8 3.0 0.06 0.2 g/t Au
HAD145AW2 MR-DD 463201 7597816 256 Assays Pending
HAD152W1 MR-DD Assays Pending
HAD153 MR-DD 464786 7598418 269 726 201 -60 Assays Pending
HAD154 MR-DD 463629 597438 261 1242.5 95 -55 No Significant Result
HAD155 MR-DD 464535 598537 257 837.4 250 -60 No Significant Result
(#)drilling in progress. **partial intercept, assays pending. ^updated
intercept. ^^previously reported intercept.
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.
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