TIDMGGP
RNS Number : 3260E
Greatland Gold PLC
10 March 2022
10 March 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 Growth Drilling Update
Growth drilling building momentum with six drill rigs now
operational at Havieron, targeting extensions to SE Crescent,
Eastern Breccia, Northern Breccia & regional geophysical
targets
Further high grade "SE Crescent" style sulphide
mineralisation
confirmed at the North West Pod
Further Eastern Breccia mineralisation recognised
outside the recently updated Initial Mineral Resource(1)
Higher-grade copper mineralisation identified
in the core of the Northern Breccia, open at depth
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
* Six drill rigs currently operational after the
Christmas shutdown, all focused on growth programmes
targeting:
* Eastern Breccia: defining the mineralised footprint
of the Eastern Breccia, focusing on extending the
higher-grade mineralisation which remains open in all
directions
* South East Crescent: targeting extensions to the SE
Crescent below the Updated Mineral Resource (1) in
addition to lateral extensions adjacent to the
existing high-grade Resource
* Northern Breccia: delineating existing high-grade
mineralised zones within the Northern Breccia and
Northwest Pod (NW Pod)
* New Targets: drilling of targets identified outside
of the immediate vicinity of the Havieron deposit,
but within the Havieron Joint Venture area has
commenced
* High grade result in the NW Pod on the northwest
margin of the Havieron Breccia system confirms the
potential for further high-grade sulphide
mineralisation outside the SE Crescent Zone:
* HAD089W4 52.7m @ 7.1 g/t Au and 0.04% Cu or 7.2g/t
AuEq(2) from 1,074m
* Drilling into the Eastern Breccia returns a broad
zone of mineralisation on the southern flank of the
recently announced Initial Mineral Resource(1) of
14Mt @ 1.2 g/t Au and 0.09% Cu or 1.3 g/t AuEq (2) in
the Eastern Breccia (3) :
* HAD145A 70.2m @ 0.82 g/t Au and 0.22% Cu or 1.15g/t
AuEq(2) from 1,654.8m
* Northern Breccia drilling continues to assess the
extents of higher-grade mineralisation within the
core of the Havieron Breccia, with results in HAD145A
intersecting a zone of copper dominant sulphide
mineralisation that is currently open at depth:
* HAD145A 69m @ 0.72g/t Au and 1.1% Cu or 2.37g/t
AuEq(2) from 1,300m
* Including a higher grade zone of 31.7m @ 1.16g/t Au
and 1.6% Cu or 3.56g/t Au Eq(2) from 1,311.5m
* Early Works advancing: Construction activities are
progressing well with achievements including (as of
25 February 2022):
* Box cut and portal completed in May 2021.
* Exploration decline has advanced 296 metres.
* First ventilation shaft blind boring has commenced.
* Works to progress the necessary approvals and permits
required to commence the development of an operating
underground mine and associated infrastructure at the
Havieron Project are ongoing.
* Feasibility Study progressing: Feasibility study work
by Newcrest continuing along with concurrent studies
assessing broader growth options for Havieron. Upside
opportunities are being evaluated to increase the
scale and life of Havieron, as well as presenting the
opportunity to adopt alternative, lower cost, mining
methods. The Feasibility Study is still forecasted to
be delivered in the December 2022 quarter(4) .
Shaun Day, Chief Executive Officer of Greatland Gold plc,
commented: "The ramp up of the 2022 growth drill programme
is an exciting time for Greatland and its shareholders as
it presents an opportunity to further understand the size
and scale of the Havieron system.
"This growth drilling programme is already delivering pleasing
results with high-grade sulphide mineralisation confirmed
in the NW Pod, several hundred meters away from the South
East Crescent and Eastern Breccia zones. This, along with
a continuation of the high-grade mineralisation outside of
the recently updated Initial Mineral Resource for the Eastern
Breccia is a fantastic start to the calendar year.
"Additionally, we are encouraged by the higher grade copper
results we are seeing near the base of the Northern Breccia.
With five drill rigs testing extensions to the current mineralised
system and a further drill rig testing for new opportunities
on the mining licence outside of the immediate known mineralisation,
the 2022 drilling programme lays the foundation for defining
the next phase of Havieron's growth."
(1) Greatland announcement Havieron Resources and Reserve Update
on 3(rd) March 2022
(2) The gold equivalent (AuEq) is based on assumed prices of
US$1,450/oz Au and US$3.23/lb Cu for Ore Reserve and assumed prices
of US$1,600/oz Au and US$3.50/lb Cu for Mineral Resource and
metallurgical recoveries based on block metal grade, reporting
approximately at 88% for Au and 84% for Cu which in both cases
equates to a formula of approximately AuEq = Au (g/t) + 1.5 * Cu
(%). It is the company's opinion that all the elements included in
the metal equivalents calculation have a reasonable potential to be
recovered and sold
(3) Greatland announcement Havieron Exploration Update on 28(th)
January 2022
(4) Newcrest market update to Australian Stock Exchange on
12(th) October 2021
Significant New Results (intercepts are reported as downhole
width not true width)
NW Pod
-- HAD089W4
-- 52.7m @ 7.1 g/t Au and 0.04% Cu from 1,074m
Northern Breccia
-- HAD141W2
-- 88m @ 0.98 g/t Au and 0.03% Cu from 1,314m
-- HAD145A
-- 69m @ 0.72g/t Au and 1.1% Cu from 1,300m
Eastern Breccia
-- HAD145A
-- 70.2m @ 0.82 g/t Au and 0.22% Cu from 1,654.8m
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/ Varun Talwar /Detlir Elezi +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/Alan Gunn +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 copper-gold 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 mineralisation under 420m
of post mineralisation cover. The Joint Venture commenced
drilling during the June 2019 quarter and has completed 237,290m
of drilling from 281 drill holes to date (excluding holes
in progress, abandoned holes, or drill holes which have not
been sampled).
Drilling activities in the period have produced a further
10,797m of drilling from 9 holes since the last update ("Havieron
Exploration Update", RNS dated 28 January 2022). New assay
results are reported from 7 holes, and additional results
are reported for 2 holes for which partial results were reported
last period.
4 holes returned significant assay intercepts in excess of
50 gram metres Au (Au ppm x length metres).
Drilling in the reporting period was focused on potential
resource growth at the South East Crescent Zone, Northern
Breccia, Eastern Breccia and regional exploration holes outside
the main Havieron mineralised system. Assays reported include
drilling from:
* Northern Breccia & NW Pod - assay results reported
for two drill holes with two holes awaiting assays;
* Eastern Breccia - assay results reported for three
drill holes with one hole awaiting assays;
* South East Crescent Deeps - assay results reported
for two drill holes with one hole awaiting assays;
and
* First pass testing of geophysical targets outboard of
the Havieron system (along the Havieron dolerite dyke,
north and south of the main mineralised pipe) - assay
results reported for two drill holes, and results
pending for a further 2 drill holes.
The reduced quantity of holes and new assays reported reflect
the reduction in drill rig numbers over the Christmas holiday
period. There are now six rigs operating two shifts, and the
number of drill holes completed is expected to increase in
further updates. The JV is targeting a further 40,000m of
growth drilling in the year to 30 June 2022 which has the
potential to further expand the Havieron resource.
Refer to Appendix 2 for all reported results.
Northern Breccia infill drilling has targeted known high-grade
mineralisation around the NW Pod Target on the north west
margin of the Breccia in addition to internal higher grade
mineralisation within the core of the Breccia. Both high grade
"NW Pod" mineralisation (hole HAD089W4) and broader lower
grade Northern Breccia mineralisation were intersected. In
addition, results in HAD145A intersected a 69m metre zone
of >1% copper dominant sulphide mineralisation that is currently
open at depth.
Results include:
* HAD089W4
o 52.7m @ 7.1g/t Au & 0.04% Cu from 1,074m
o Including 31.4m @ 12g/t Au & 0.03% Cu from 1,094.9m
* HAD141W2
o 88m @ 0.98g/t Au & 0.03% Cu from 1,314m
* HAD145A
o 69m @ 0.72g/t Au and 1.1% Cu from 1,300m
South East Crescent Deeps growth drilling targeting higher
grade mineralisation at depth below the Updated Mineral Resource
(1) reported new results from one drill hole, with one hole
pending. Additional assays were received for HAD133W6 originally
reported in the 28 January 2022 update. There are no changes
to these high-grade significant intersections and the hole
has not been reported here.
New results include:
* HAD133W7
o 22.7m @ 1.2 g/t Au & 0.08% Cu from 1,525.3m
o 21m @ 1.2 g/t Au & 0.07% Cu from 1,594.2m
This drill hole is located approximately 100m below the existing
Updated Mineral Resource (1) , slightly to the west of what
is interpreted to be the steeply SE plunging high grade Crescent
Zone (Figure 3).
At the Eastern Breccia, assays for two new holes and additional
results from previously reported HAD104 are presented. Further
results from hole HAD104 extended the previously reported
lower intersection to 85m @ 1.2g/t Au & 0.37% Cu. New hole
HAD145A reported, amongst other intersections, 70.2m @ 0.82g/t
Au and 0.22% Cu from 1654.9m within the Eastern Breccia (Figure
5).
Drilling is focussed on defining the extents of this higher-grade
mineralisation seen in HAD104 which remains open in all directions.
Note that both HAD104 and HAD145A show an increase in Cu,
suggesting the Eastern Breccia mineralisation becomes more
Cu rich to the southeast.
Results include
* HAD104^
o 62.5m @ 5.9g/t Au & 0.30% Cu from 1,546.5m
o including 49.4m @ 7.1g/t Au & 0.38% Cu from 1,554.6m; and
o 85m @ 1.2g/t Au & 0.37% Cu from 1,717m
o including 10.9m @ 3.0g/t Au and 0.38% Cu from 1,735.6m
* HAD145A
o 70.2m @ 0.82g/t Au & 0.22% Cu from 1,654.9m
o including 24.6m @ 1.4g/t Au & 0.44% Cu
Drilling to test geophysical targets outside of the known
Havieron system is ongoing, including evaluating the Havieron
dolerite at multiple intervals north and south of the Havieron
mineralised pipe. HAD154 and HAD155 tested the Havieron dolerite
some 400m north and south of Havieron respectively, results
are pending. Results were received for ZIP001 and ZIP002,
testing the Zipa target, located approximately 2 km to the
north of Havieron and centred on a prominent gravity high
anomaly. No significant results were reported for the two
completed Zipa drillholes, although both holes intersected
diorite like lithologies in metasediment, a rock type considered
significant to mineralisation at Havieron. Drilling continues
to test targets along the Havieron dolerite dyke.
The JV is targeting a further 40,000m of growth drilling in
the year to 30 June 2022 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(1) ;
* Expansion of multiple higher-grade zones including
Northern Breccia and North West Pod;
* Potential for additional material in the Eastern
Breccia; 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
The development of the exploration decline continued during
the period with 296 metres now complete with the decline contractor
operating 24 hours per day. Newcrest advised the development
of the exploration decline experienced poor ground conditions
during the period, although ground conditions are expected
to improve with depth. Construction of the first ventilation
shaft commenced in December 2021 and blind boring of the decline
vent raise from surface commenced during the period . Works
to progress the necessary approvals and permits that are required
to commence the development of an operating underground mine
and associated infrastructure at the Havieron Project are
ongoing.
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. As outlined in previous
announcements, following delivery of a Pre-Feasibility Study
and meeting the relevant expenditure commitment, Newcrest
is entitled (subject to the terms of the Joint Venture Agreement)
to an additional 10% joint venture interest, and exercising
this entitlement will result in an overall joint venture interest
of 70% Newcrest (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%). As detailed in the
announcement of 21 December 2021, Newcrest issued a notice
to Greatland informing it that Newcrest would like to begin
the process under the Joint Venture Agreement to seek to agree
or, failing agreement, determine the option exercise price.
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/
Competent Person:
Information in this announcement that relates to exploration
results has been extracted from the following announcements:
"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 John McIntyre, a Member of the Australian Institute
of Geoscientists (MAIG), who has more than 30 years relevant
industry experience. Mr McIntyre is an employee of the Company
and has a financial interest in Greatland Gold plc. Mr McIntyre
has sufficient experience relevant to the style of mineralisation
and 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 McIntyre consents to the inclusion
in this announcement of the matters based on this information
in the form and context in which it appears. Mr McIntyre 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 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.
APPIX I
Havieron Project (Greatland Gold plc - Newcrest Joint Venture ):
JORC Table 1
Section 1 Sampling Techniques and Data
Sampling techniques Diamond drilling core samples are obtained from 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). 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 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 did 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 (for all core drilled, 209,911 of drilling
from 311 holes drilled up until 2 December 2021, all
intersecting mineralisation), 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 Core was cut and sampled at the Telfer or Havieron core
techniques processing facilities. Half core samples were collected
and sample in pre-numbered calico bags and grouped into bulk bags
preparation 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 drill holes did not produce recoverable material
and have not been 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 106<MU>m.
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 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.
No other analytical methods or tools have been used
in the estimation.
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 Assessment of reported significant assay intervals was
of sampling verified by re-logging of diamond drill core intervals
and assaying 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 Drill hole collar locations were surveyed using a differential
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.
All collar coordinates are provided in the Geocentric
Datum of Australian (GDA20 Zone 51). All relative depth
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 Within the South East Crescent Zone and Breccia Zone
and distribution 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 Drill holes targeting the Crescent Zone are oriented
of data in to intersect the steeply dipping high-grade sulphide
relation to mineralisation zones at an angle of greater than 40
geological degrees. As such, the drilled length of reported intersections
structure 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, within 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 Internal reviews by Newcrest (JV Manager) of the core
reviews 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
Mineral tenement The Havieron Project is located within mining tenement
and land tenure M45/1287 and is jointly owned by Greatland Pty Ltd and
status 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 currently holds a 60% joint venture interest
and is entitled (subject to the terms of the Joint Venture
Agreement) to an additional 10% interest, giving an
aggregate 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 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 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)
at Havieron.
The mining tenement M45/1287 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 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 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 a
650m by 350m ovoid area, and to depths of up to 1500m
below surface.
-------------------------------------------------------------------
Drill hole As provided in Appendix II. Refer to previous exploration
Information releases for drillhole information of the previously
reported intercepts highlighted in this report.
-------------------------------------------------------------------
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 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 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.
-------------------------------------------------------------------
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 and 28 January 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 Nil
exploration
data
-------------------------------------------------------------------
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.
-------------------------------------------------------------------
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.
Geotech drill hole - Not sampled
HAD085W5 MR-DD 463489 7598058 255 1435.1 111 -63 for assays
------- ------- -------- ---- ------- ---- ------
HAD085W6 MR-DD 463489 7598058 255 1513.3 111 -63 Assays Pending
------- ------- -------- ---- ------- ---- ------
HAD085W7 MR-DD 463489 7598058 255 1518.2 111 -63 Assays Pending
------- ------- -------- ---- ------- ---- ------
0.2
g/t
HAD089W4 MR-DD 464300 7597747 258 1489.9 290 -61 570 630 60 0.86 0.01 Au
------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
30 g.m.
Incl. 570.9 571.2 0.3 101 0.00 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
696 732.3 36.3 0.21 0.03 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
770.5 793.2 22.7 0.22 0.02 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
878.1 942 63.9 0.57 0.07 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1074 1126.7 52.7 7.1 0.04 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1094.9 1126.2 31.4 12 0.03 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
30 g.m.
Incl 1114.7 1116.1 1.4 40 0.04 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
30 g.m.
Incl 1117.3 1122.2 4.8 35 0.01 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
HAD093a MR-DD 463523 7597783 256 1525.8 77 -66 Assays Pending
------- ------- -------- ---- ------- ---- ------
0.2
g/t
HAD104^ MR-DD 463522 7597782 257 1913.6 87 -63 642.9 677.6 34.7 1.1 0.06 Au
------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
792.1 819.9 27.8 0.29 0.06 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
835 855.1 20.1 3.4 0.43 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
866.9 895.3 28.4 0.63 0.15 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
956.2 1092.6 136.4 0.72 0.09 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1546.5 1609 62.5 5.9 0.30 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1554.6 1604 49.4 7.1 0.38 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
30 g.m.
Incl 1566.6 1567.6 1.0 82 0.52 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
^ 1717 1802 85 1.2 0.37 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1735.6 1746.5 10.9 3.0 0.38 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
HAD133W6 g/t
^^ MR-DD 464072 7598317 257 1639.5 171 -65 1367 1413 46 0.92 0.01 Au
------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1424.6 1592.7 168.1 1.9 0.17 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1425.9 1469 43.1 3.7 0.34 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
30 g.m.
1441 1442 1.0 64 0.20 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1531.8 1550 18.2 2.6 0.31 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1555.5 1567 11.5 5.4 0.04 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
HAD133W7 MR-DD 464072 7598317 257 1692.5 171 -65 1462 1509 47 0.3 0.07 Au
------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1525.3 1548 22.7 1.2 0.08 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1594.2 1615.2 21.0 1.2 0.07 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1601.7 1613.4 11.7 1.7 0.09 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
HAD133W8 464072 7598317 257 1696 171 -65 Assays Pending
------- -------- ---- ------- ---- ------
0.2
g/t
HAD141W2 463361 7597505 264 1757.2 27 -65 1314 1402 88 0.98 0.03 Au
------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1330 1343 13 1.0 0.05 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1413 1433 20 0.39 0.01 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1472.3 1493 20.8 0.30 0.03 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1523.5 1559.2 35.7 0.76 0.16 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
HAD145A MR-DD 463201 7597816 256 1824.5 75 -65 1300 1369 69 0.72 1.1 Au
------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1383 1432.2 49.2 0.33 0.26 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1590.3 1628 37.7 0.35 0.02 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1654.9 1725 70.2 0.82 0.22 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
1.0
g/t
Incl 1668.9 1693.4 24.6 1.4 0.44 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
1738.9 1763.5 24.6 1.2 0.06 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
HAD145AW1 463201 7597816 256 2041.3 75 -65 Assays Pending
------- -------- ---- ------- ---- ------
1.0
g/t
HAD146W1 MR-DD 463451 7597873 253 1189.4 69 -60 630.2 640.3 10.1 1.6 0.46 Au
------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
651.8 672.3 20.5 0.58 0.13 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
0.2
g/t
804 884.6 80.6 0.37 0.44 Au
------------------- ------- -------- ---- ------- ---- ------ ------- ------ ----- ----- --------
HAD152 463402 7597058 254 2056.9 29 -62 Assays Pending
------- -------- ---- ------- ---- ------
HAD153 464786 7598418 269 726 201 -60 Assays Pending
------- -------- ---- ------- ---- ------
HAD154 463629 7597438 261 1242.5 95 -55 Assays Pending
------- -------- ---- ------- ---- ------
HAD155 464535 7598537 257 837.4 250 -60 Assays Pending
------- -------- ---- ------- ---- ------
ZIP001 MR-DD 463055 7599813 258 900.8 45 -70 No Significant Result
------- ------- -------- ---- ------- ---- ------
ZIP002 MR-DD 463606 7599618 264 883 45 -75 No Significant Result
------- ------- -------- ---- ------- ---- ------
(#) drilling in progress. **partial intercept, assays pending.
^updated intercept. ^^previously reported intercept.
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END
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