Greatland
Gold plc (AIM: GGP)
E: info@greatlandgold.com
W: https://greatlandgold.com
:
twitter.com/greatlandgold
NEWS RELEASE
| 7 November
2024
RNS
Reach announcement
Paterson Exploration Update
Greatland Gold plc (AIM:GGP) (Greatland or the Company) is pleased to provide an
update on recent exploration activities in the Paterson region.
Highlights
§ Drilling at Chilly
assay results: Pathfinder mineralisation intersected at Chilly
prospect with a peak of 37m @ 0.21
g/t Au and 0.13% Cu from 136m, including 1m @ 6.1 g/t Au and 0.24% Cu from 137m
in first pass reconnaissance drilling.
§ Drilling at Teague
intersected veining, sulphides and alteration. Assay results
pending.
§ Drilling commenced at
London and Bootstrap prospects
§ Strong magnetic and
gravity targets identified at Atlantis for future drilling.
§ Interpretation of
surface sampling enables marker unit identification in prospective
lithology under cover regionally.
Greatland Managing Director, Shaun Day,
commented:
"Completion of our transformational acquisition of Havieron
and Telfer is targeted for this December quarter, and ownership of
the Telfer infrastructure greatly enhances the value of exploration
success in our Paterson portfolio. Greatland will emerge from
the acquisition with interests in up to approximately 4,500 square
kilometres of tenure in the Paterson, providing significant option
value within our exploration portfolio Pleasing recent
exploration progress includes highly encouraging results from
drilling at our Chilly and Teague prospects, identification of new
drill targets at Atlantis from magnetic and gravity surveying and
modelling, and soil sampling results which enhance our ability to
map geology undercover."
Figure 1: Greatland and
Newmont Paterson granted tenure and prospects
Notes:
1. Pursuant
to the acquisition of Havieron, Telfer and related assets announced
by Greatland on 10 September 2024 (Acquisition) and targeted for
completion in the December 2024 quarter, Greatland will consolidate
100% ownership of the Juri project.
2. Pursuant
to the Acquisition, Greatland will consolidate 100% ownership of
Havieron.
3. Pursuant
to the Acquisition, subject to receipt of consent from Antipa
Minerals Limited, Greatland will acquire a right to earn up to 75%
in the Wilki project.
4. Pursuant to the Acquisition, Greatland will acquire 100%
ownership of the Telfer exploration portfolio.
Strickland E45/4807 and
Telfer Domain E45/4834 - Paterson South joint venture
Greatland is currently earning up to a 75% joint
venture interest with Rio Tinto Exploration (RTX) in over 1,500km2 of
tenure (the Paterson South
project, shown in Figure 2), managed by Greatland.
The Chilly prospect sits on the northern limb of a
regional doubly plunging anticline and is interpreted to be close
to the contact between the Puntapunta Formation and the Telfer
Member (Figure 2). The southeastern hinge of the anticline
appears to be truncated by a Proterozoic granite emplaced on a
crustal scale northeast trending linear. The Telfer deposit sits in
the same lithological position in a doubly plunging anticline, with
a posited but not yet identified granitic source for the
mineralisation.
A total of five RC holes (CHY001RC - CHY005RC) for
990m (Table 1) were completed, testing the Telfer stratigraphic
position on a magnetic high (Figure 2) at Chilly.
Drilling occurred on three lines approximately 750m apart,
aligned at right angles to and testing complexities in the magnetic
linear, with holes spaced 100 - 200m apart.
Peak assay results of 37m @ 0.21 g/t Au and 0.13% Cu
from 136m, including 1m @ 6.1 g/t Au and 0.24% Cu from 137m, were
returned from RC drilling in hole CHYR005RC (Figure 1) located in
the eastern part of the Strickland tenement (E45/4807). Three
of the other four holes returned intercepts of 1m or more at
greater than 0.2% Cu including 2m @ 0.44% Cu in hole CHY003RC on
the central line (Figure 4) and 1m @ 0.77% from 200m in hole
CHY002RC the northern line (Figure 3), both of which occur in fresh
dolerite.
In detail, the intersected mineralisation in hole
CHY005RC occurs in sediment hosted veining near the contact with an
interpreted vertical dolerite sill, within weathered bedrock
(Figure 5). It is the southeastern most hole of the program with
significant structural complexity evident in magnetics along strike
to the southeast (Figure 2). The gold mineralisation is open in
this direction with no historic drilling known for over 3km. It is
not certain this round of drilling has tested the same
stratigraphic position on the two other drill lines to the north
west.
This drilling has confirmed pathfinder mineralisation
at the Chilly prospect with further work to understand the
potential underway.
As a result of recent discussions with Traditional
Owners, an exclusion area has been extended over an area including
the Paterson Dome West prospect, and accordingly other prospects
will be prioritised for on-ground activities.
Figure 2: Chilly prospect
location within the Strickland tenement with section lines in red
on reduced to pole first vertical derivative aeromagnetics and
historical drilling. The doubly plunging Paterson Dome anticline
axis is shown with a yellow arrow
Table 1: Chilly RC
drilling collars and significant intercepts
Hole_ID
|
Hole Type
|
Collar east
|
Collar North
|
Collar Rl
|
Collar Azim
|
Collar Dip
|
Hole Depth
|
From
|
To
|
Width
|
Au
ppm
|
Cu
%
|
CHY001RC
|
RC
|
405897
|
7633240
|
248
|
46
|
-62
|
180
|
106
|
107
|
1
|
0.01
|
0.22
|
152
|
153
|
1
|
0.09
|
0.12
|
159
|
161
|
2
|
0.05
|
0.29
|
CHY002RC
|
RC
|
406085
|
7633412
|
247
|
45
|
-60
|
204
|
200
|
201
|
1
|
0.05
|
0.77
|
CHY003RC
|
RC
|
406652
|
7632981
|
246
|
48
|
-61
|
168
|
83
|
84
|
1
|
0.02
|
0.12
|
100
|
102
|
2
|
0.09
|
0.44
|
CHY004RC
|
RC
|
407067
|
7632303
|
246
|
49
|
-61
|
234
|
no
significant intercepts
|
CHY005RC
|
RC
|
407161
|
7632371
|
246
|
50
|
-60
|
204
|
136
|
173
|
37
|
0.21
|
0.13
|
incl.
|
137
|
138
|
1
|
6.12
|
0.24
|
Note: intercepts
calculated based on interval having AU ppm >= 0.1g/t or Cu%
>= 0.1%, with maximum consecutive internal waste of
4m.
Figure 3: Chilly RC drilling
oblique section 1.
Figure
4: Chilly oblique
section 2
Figure 5: Chilly oblique
section 3
Budjidowns E45/4815 -
Paterson South JV
The Atlantis prospect at Budjidowns (Figure 1) is a focus for Greatland in
FY25. The area is characterised by bullseye magnetic features
within the Proterozoic basement.
There are many different sources of magnetic and
gravity anomalies, some of which will be mineralisation or
prospective for mineralisation while most will not. For example,
the Havieron ore body has a magnetic anomaly in part due to the
existence of pyrrhotite in the ore, however a similar magnetic
anomaly could also be created by a mafic intrusive plug. Both
a mafic intrusive and the Havieron orebody are denser than the
surrounding sedimentary rocks and return a positive gravity
anomaly. The two anomalies cannot be separated by either gravity or
magnetic signatures alone and there are a lot of magnetic bodies in
the Paterson making drill testing each one unfeasibly
expensive.
The Hanneson (Jim Hanneson, Adelaide Mining
Geophysics) modeling method that helped in the discovery of
Havieron and Ramses at depth under cover takes advantage of the
fact that the gravity and magnetic signatures of mafic rocks are
considered to occur within a range of values. These ranges overlap
with the mineralised signatures for gravity and magnetics for the
targeted orebodies, however when both are considered at the same
time for a conceptual source, the mafic sources can be rejected if
the anomaly sits outside the standard ranges. For example, a
proposed source with the density of a mafic intrusive and an
assigned volume and shape to give the correct gravity anomaly
measured at surface, would necessarily have a certain magnetic
anomaly at surface. If the actual recorded magnetic anomaly is
higher than that for a normal mafic intrusive, the likelihood of
the source being a mineralised body with significant pyrrhotite is
much higher and would make the target more prospective. A similar
method can discriminate magnetic felsic intrusive from
mineralisation.
To enable this modelling at Atlantis, a ground gravity
survey was completed in July 2024 (Figure 6). Processing the data
using this method has identified four targets which are considered
prospective for mineralisation at Atlantis, from more than 90
modelled bodies. Of these, Target 19 is considered most
prospective for a mineralised orebody and sits at a depth of 500m
below surface. A drill program is being planned which will be
completed in the first half of 2025.
Figure 6: Atlantis ground
gravity survey extents in the north of the Budjidowns tenement with
Hanneson modelled targets. Oblique view looking north.
Havieron area exploration
Drilling is underway across several projects within
the vicinity of the Havieron project. The drilling (Figure 7)
targets geophysical, structural and geological targets resulting
from a regional review.
Figure 7: Havieron region
drilling on Reduced to pole aeromagnetics.
Notes:
1. Pursuant
to the Acquisition, Greatland will consolidate 100% ownership of
the Juri project.
2. Pursuant
to the Acquisition, Greatland will consolidate 100% ownership of
Havieron.
3. Pursuant
to the Acquisition, subject to receipt of consent from Antipa
Minerals Limited, Greatland will acquire a right to earn up to 75%
in the Wilki project.
4. Pursuant
to the Acquisition, Greatland will acquire 100% ownership of the
Telfer exploration portfolio.
Table 2: Havieron region
Greatland Drilling
Hole_ID
|
Hole Type
|
Depth
|
East
|
North
|
RL
|
Azim
|
Dip
|
Lease
|
Project
|
Prospect
|
Status
|
PMT001RCD
|
RCD
|
486.7
|
458111
|
7600663
|
246
|
292
|
-67
|
E45/4701
|
Scallywag
|
MT SCW
|
Complete
|
PMT002RCD
|
RCD
|
596.2
|
458201
|
7600704
|
246
|
325
|
-66
|
E45/4701
|
Scallywag
|
MT SCW
|
Complete
|
SKY001RCD
|
RC
|
204
|
457688
|
7596437
|
241
|
180
|
-80
|
E45/5351
|
Paterson
|
Bootstrap
|
Pre-Collar
|
SKY002RCD
|
RC
|
150
|
458790
|
7596148
|
239
|
180
|
-80
|
E45/5351
|
Paterson
|
Bootstrap
|
Pre-Collar
|
TRS001RCD
|
RCD
|
303.4
|
451836
|
7588819
|
247
|
321
|
-70
|
E 45/5532
|
Paterson South
|
Teague
|
Complete
|
TRS002RCD
|
RCD
|
406.7
|
451537
|
7588276
|
270
|
289
|
-70
|
E 45/5532
|
Paterson South
|
Teague
|
Complete
|
TRS003RCD
|
DD
|
148.2
|
451537
|
7588276
|
270
|
290
|
-70
|
E 45/5532
|
Paterson South
|
Teague
|
Abandoned
|
Skylar E45/5351 and
Triangle E45/5352 - Paterson South joint venture
Diamond drill (DD) testing of geological, magnetic and
structural targets at the Bootstrap and Teague prospects (Figure 2)
is underway.
Drilling at Teague targeting across an interpreted
fold structure has been completed with three diamond tailed RC
holes for 858m (Figure 7). Hole TRS002RCD is a redrill of TRS003RCD
which collapsed before getting to depth. Both holes TRS001RCD and
TRS002RCD intersected calcareous sediments interpreted as
Puntapunta formation, while hole TRS002RCD showed strong veining,
structural disruption alteration and trace sulphides. These
holes have been sampled and sent for assays.
Figure 8:DH Core intercepts
from TRS002RCD; (A) Qv with pyrite at 178m, (B) wrench veining
186.86, (C) complex vein interactions 215.13m, (D) arsenopyrite
vein 283.91m, (E) second vein interaction example
359.7m.
At the Bootstrap prospect, pre-collars through the
Permian have been completed for two holes -SKY001RCD and SKY002RCD
(Figure 7), with a further two holes planned and in progress. This
drilling tests interpreted magnetic upgrading alteration and
faulted disruption on the margin of an anticline as well as the
anticlinal hinge at a position interpreted to be the Puntapunta -
Telfer Member contact where it is intersected by a north-south
striking dolerite feature.
Scallywag E45/4701
and Black Hills North (E45/6134)
At the London prospect (Figure 2), follow up diamond
drill testing of the combined magnetotelluric (MT) conductive
anomaly and demagnetised zone in the core of a regional synform
with two holes completed for 1,082m. MT surveys are
considered particularly effective in areas of deep conductive
cover; a similar survey conducted in 2022 of the Havieron mining
lease successfully detected the Havieron orebody.
Holes PMT001RCD and PMT002RCD intercepted bedrock and
are currently being logged.
Regional
soils
Ultra Fine Fraction (UFF) analysis across the finished
grids at Wilki Lakes, Scallywag, Black Hills North and Pascalle
(Figure 9) show no major significant mineralisation.
Interpretation of the results has found that the
Puntapunta formation can be defined from the multielement data,
which will significantly improve the geological interpretation and
target generation across the region.
The Scallywag grid has the highest values of high
temperature, mobile elements such as arsenic and molybdenum,
possibly indicating a higher level of fluid mobilisation relative
to the less structurally complex areas.
Figure 9: Surface sampling
completed in 2024 to date in the Havieron region
Notes:
1. Pursuant
to the Acquisition, Greatland will consolidate 100% ownership of
the Juri project.
2. Pursuant
to the Acquisition, Greatland will consolidate 100% ownership of
Havieron.
3. Pursuant
to the Acquisition, subject to receipt of consent from Antipa
Minerals Limited, Greatland will acquire a right to earn up to 75%
in the Wilki project.
4. Pursuant to the Acquisition, Greatland will acquire 100%
ownership of the Telfer exploration portfolio.
Contact
For further information, please
contact:
Greatland Gold plc
Shaun Day, Managing Director
| Rowan Krasnoff, Head of Business Development
info@greatlandgold.com
Nominated Advisor
SPARK Advisory Partners
Andrew Emmott / James Keeshan / Neil
Baldwin | +44 203 368 3550
Corporate Brokers
Canaccord Genuity |
James Asensio / George Grainger | +44 207 523
8000
Berenberg | Matthew
Armitt / Jennifer Lee | +44 203 368 3550
SI Capital Limited |
Nick Emerson / Sam Lomanto | +44 148 341
3500
Media Relations
UK - Gracechurch Group | Harry
Chathli / Alexis Gore / Henry Gamble | +44 204 582
3500
Australia - Fivemark Partners
| Michael Vaughan | +61 422 602 720
About RNS Reach announcements
This is an RNS Reach announcement.
RNS Reach is an investor communication service aimed at assisting
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About Greatland
Greatland is a mining development
and exploration company focused primarily on precious and base
metals.
The Company's flagship asset is the
world-class Havieron gold-copper project in the Paterson Province
of Western Australia, discovered by Greatland and presently under
development in joint venture with world gold major, Newmont
Corporation.
Havieron is located approximately
45km east of the Telfer gold mine. The box cut and decline to the
Havieron orebody commenced in February 2021. Total development
exceeds 3,060m including over 2,110m of advance in the main access
decline (as at 30 June 2024). Havieron is intended to
leverage the existing Telfer infrastructure and processing plant,
which would de-risk the development and reduces capital
expenditure.
On 10 September 2024, Greatland
announced that certain of its wholly owned subsidiaries had entered
into a binding agreement with certain Newmont Corporation
subsidiaries to acquire, subject to certain conditions being
satisfied, a 70% ownership interest in the Havieron gold-copper
project (consolidating Greatland's ownership of Havieron to 100%),
100% ownership of the Telfer gold-copper mine, and other related
interests in assets in the Paterson region. Completion of the
acquisition is subject to the satisfaction of certain conditions
precedent and is targeted to occur during Q4 2024.
Greatland has a proven track record of discovery and
exploration success and is pursuing the next generation of tier-one
mineral deposits by applying advanced exploration techniques in
under-explored regions. Greatland has a number of exploration
projects across Western Australia and in parallel to the
development of Havieron is focused on becoming a multi-commodity
miner of significant scale.
JORC 2012 table 1.
Section 1 Sampling
Techniques and Data
Criteria
|
JORC Code Explanation
|
Commentary
|
Sampling
techniques
|
§ Nature and quality of
sampling (eg cut channels, random chips, or specific specialised
industry standard measurement tools appropriate to the minerals
under investigation)
§ Include reference to
measures taken to ensure sample representivity and the appropriate
calibration of any measurement tools or systems
used
§ Aspects of the determination
of mineralisation that are Material to the Public
Report
§ In cases where 'industry
standard' work has been done this would be relatively simple (eg
'reverse circulation drilling was used to obtain 1 m samples from
which 3 kg was pulverised to produce a 30 g charge for fire
assay'). In other cases more explanation may be required, such as
where there is coarse gold that has inherent sampling problems.
Unusual commodities or mineralisation types (eg submarine nodules)
may warrant disclosure of detailed information
|
§ An RC
Drill rig was used to complete drill holes at Chilly prospect and
pre- collars on the Scallywag and Skylar tenements for follow up
tails with DD rig. The diamond core rig was also used to
drill mud rotary from surface to competent ground or through the
cover sequence, before completing the hole with a diamond core tail
in competent ground/basement, to obtain representative samples in
an industry standard method.
§ Greatland
RC samples consisted of cone split representative 1m crushed rock
samples with average weights of less than 5kg.
§ Greatland
diamond core samples comprise half core material in generally 1m
lengths (NQ and HQ diameter core). All Proterozoic basement and
generally the basal 10-20m of the Permian cover was sampled where
intersected with Diamond or RC drilling. Core was cut using an
automated core-cutter.
§ No regular
sampling was completed for mud rotary drilling as the sample is
considered contaminated.
§ Cutting of
core adjacent to downhole orientation line or, where un-oriented
and possible, orthogonal to visible geological structures such as
bedding, foliation; ensures sample representivity.
§ 50% of the
core is retained for future check logging, re-sampling and
QA/QC
Ground Gravity Data Collection:
In late June through early July
2024, Daishsat on behalf of Greatland Gold undertook the collection
of 1786 individual station gravity measurements on a predominantly
100x100m east - west orientation going out to 200 x200m spacing on
the margins of the survey. The data collection traverses were
customised to avoid crossing sand dunes. The survey covered the
northern 5.2km of the Budjidowns tenement inclusive of the Atlantis
prospect.
Scintrex CG-5 Autograv gravity
meters were used for gravity data acquisition and base station
control. Leica GX1230 GNSS receivers were used for gravity station
positional acquisition. All gravity and GNSS data were acquired
using Daishsat UTV methods, with 2 crews operating concurrently
onsite.
One new GNSS base station, numbered
1600, was established and utilised for reduction and drift control
for the survey.
|
Drilling
techniques
|
§ Drill type (eg core, reverse
circulation, open-hole hammer, rotary air blast, auger, Bangka,
sonic, etc) and details (eg core diameter, triple or standard tube,
depth of diamond tails, face-sampling bit or other type, whether
core is oriented and if so, by what method, etc)
|
§ RC
drilling was completed at Chilly.
§ For
Havieron region drilling RC or mud-rotary pre-collars were followed
by PQ and/orHQ then NQ diamond drill core to EOH
§ The core
is oriented using a Reflex mark III tool, nominally every core run
(around 6m)
|
Drill sample
recovery
|
§ Method of recording and
assessing core and chip sample recoveries and results
assessed
§ Measures taken to maximise
sample recovery and ensure representative nature of the
samples
§ Whether a relationship
exists between sample recovery and grade and whether sample bias
may have occurred due to preferential loss/gain of fine/coarse
material
|
§ Recovery
is measured on core and reconciled against driller's depth blocks
in each core tray. Basement core recovery is typically around
100%
§ No
specific measures have been taken to maximise recovery, other than
employing skilled drillers
§ Half core
cut at a consistent spacing from orientation lines assist in sample
representivity
§ No
relationship between recovery and grade has been
observed
§ To ensure
sample quality from RC drilling, a face sampling drill bit was used
and an attempt was made to keep the sample dry to avoid downhole
smearing. Where this was not possible the sample was noted as wet
in the sample log. Where this is the case some potential for sample
bias may exist
|
Logging
|
§ Whether core and chip
samples have been geologically and geotechnically logged to a level
of detail to support appropriate Mineral Resource estimation,
mining studies and metallurgical studies
§ Whether logging is
qualitative or quantitative in nature. Core (or costean, channel,
etc) photography
§ The total length and
percentage of the relevant intersections logged
|
§ The
logging is of sufficient quality to support a Mineral Resource
estimate and comprises a combination of quantitative and
qualitative features. The entire hole is logged except any mud
rotary pre-collars where this is not feasible.
§ Geological
logging recorded qualitative descriptions of lithology, alteration,
mineralisation, veining, and structure including orientation of key
geological features where oriented core was available.
§ Geotechnical measurements were recorded in core including Rock
Quality Designation (RQD), solid core recovery and qualitative rock
strength measurements
§ Magnetic
susceptibility measurements were recorded every metre using a KT20
machine
§ The bulk
density of selected drill core intervals was determined at site on
whole core samples
§ Digital
data was recorded on site and stored in an SQL database
§ All drill
cores were photographed, prior to cutting and sampling the
core
§ The ground
gravity survey data identified several gravity anomalies.
These have been modelled by an expert geophysical Consultant from
NewExCo, and separately by Jim Hanneson from Adelaide Mining
Geophysics Pty Ltd.
|
Sub-sampling techniques and
sample preparation
|
§ If core, whether cut or sawn
and whether quarter, half or all core taken.
§ If non-core, whether
riffled, tube sampled, rotary split, etc and whether sampled wet or
dry
§ For all sample types, the
nature, quality and appropriateness of the sample preparation
technique
§ Quality control procedures
adopted for all sub-sampling stages to maximise representivity of
samples
§ Measures taken to ensure
that the sampling is representative of the in situ material
collected, including for instance results for field
duplicate/second-half sampling
§ Whether sample sizes are
appropriate to the grain size of the material being
sampled
|
§ Drill
samples were freighted by road to the laboratory. All core is cut
with a core saw, and half core sampled.
§ RC samples
are split with a cone splitter attached to the cyclone and effort
made to ensure samples are dry. Whether a specific sample is wet or
dry is recorded in the database.
§ The
samples are assayed at Intertek (Perth, WA). Samples were
dried at 105oC, and the bulk of the samples pulverised
(using LM5) to produce a pulped product. Oversize primary samples
were crushed and a 3kg subsample then milled with the LM5
mill
§ Sub
sampling is reduced to minimum by using total sample pulverisation
prior to sub sampling wherever possible.
§ The sample
sizes (2-3kg) are considered appropriate for the material being
sampled
|
Quality of assay data and
laboratory tests
|
§ The nature, quality and
appropriateness of the assaying and laboratory procedures used and
whether the technique is considered partial or
total
§ For geophysical tools,
spectrometers, handheld XRF instruments, etc, the parameters used
in determining the analysis including instrument make and model,
reading times, calibrations factors applied and their derivation,
etc
§ Nature of quality control
procedures adopted (eg standards, blanks, duplicates, external
laboratory checks) and whether acceptable levels of accuracy (ie
lack of bias) and precision have been
established.
|
§ The
samples were assayed for Au by a 50gm fire assay and for a
multi-element scan using 4 acid digest and MS and OES finish for
pathfinder and lithogeochemical elements. The assays are considered
total rather than partial.
§ Greatland
QA/QC procedures include using reference samples and field
duplicate samples every 25 samples, in addition to the laboratories
in - house QA/QC methods.
§ Analysis
of the 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.
§ Historical
drilling- no sampling reported
|
Verification of sampling and
assaying
|
§ The verification of
significant intersections by either independent or alternative
company personnel.
§ The use of twinned
holes
§ Documentation of primary
data, data entry procedures, data verification, data storage
(physical and electronic) protocols
§ Discuss any adjustment to
assay data.
|
§ No twinned
holes have been completed.
§ All data
entry procedures, including original logging, sample depth
selection for sampling and recording of sample numbers are recorded
digitally in an electronic database.
§ There are
no adjustments to assay data, other than below detection samples
are reported at negative one half the detection limit
|
Location of data
points
|
§ Accuracy and quality of
surveys used to locate drill holes (collar and down-hole surveys),
trenches, mine workings and other locations used in Mineral
Resource estimation.
§ Specification of the grid
system used.
§ Quality and adequacy of
topographic control
|
§ Drill
collar locations were surveyed using handheld GPS. RL's were
collected with the same GPS and verified against regional SRTM
datasets.
§ Drill rig
alignment was attained primarily using a digital reflex TN-14 Azi
Aligner, of if not available, compass and tape method.
§ Downhole
survey was collected generally every 30m down the drill hole using
a single shot Axis Mining Champ Gyro or Relfex North Seeking Gyro
tool.
§ The
topography is generally low relief to flat, elevation within the
dune corridors in ranges between 250-265m AHD, steepening to the
southeast.
§ All collar
coordinates are provided in the Geocentric Datum of Australian
(GDA2020 Zone 51). All relative depth information is reported in
Australian Height Datum (AHD)
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Data spacing and
distribution
|
§ Data spacing for reporting
of Exploration Results
§ Whether the data spacing and
distribution is sufficient to establish the degree of geological
and grade continuity appropriate for the Mineral Resource and Ore
Reserve estimation procedure(s) and classifications
applied
§ Whether sample compositing
has been applied
|
§ RC
drilling at Chilly is on 3 lines separated by approximately 750m
and oriented at approximately 050 degrees to be at right angles to
the observed geological strike. Hole spacing on lines was 100-200m
with 2 holes on the northern line, 1 hole on the middle line and 2
holes on southern line.
§ Drill
holes reported for the Havieron region are individual exploration
holes targeting specific targets, and are not part of a grid
pattern.
§ Not
applicable in early-stage exploration
§ No sample
compositing has been applied.
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Orientation of data in
relation to geological structure
|
§ Whether the orientation of
sampling achieves unbiased sampling of possible structures and the
extent to which this is known, considering the deposit
type
§ If the relationship between
the drilling orientation and the orientation of key mineralised
structures is considered to have introduced a sampling bias, this
should be assessed and reported if material
|
§ At Chilly,
RC drilling is orientated nominally at 050o true which
is at right angles to the observed geological trend. Holes were
angled at -60o to provide a high angle to the expected
vertical stratigraphy.
§ The
Havieron region drilling is oriented at various angles to folded
layering, and to identified sulphide mineralised structures. The
relationship to possible mineralised structures is unknown at this
stage.
|
Sample
security
|
§ The measures taken to ensure
sample security
|
§ The
security of samples is controlled by tracking samples from drill
rig to database.
§ Entire
core samples are delivered by company personnel to a freight
company in Port Hedland for delivery by road freight to the assay
lab in Perth, where the core is cut and sampled
|
Audits or
reviews
|
§ The results of any audits or
reviews of sampling techniques and data
|
§ No audits
or reviews have been completed
|
Section 2 Reporting
of Exploration Results
Criteria
|
JORC Code explanation
|
Commentary
|
Mineral tenement and land
tenure status
|
§ Type, reference name/number,
location and ownership including agreements or material issues with
third parties such as joint ventures, partnerships, overriding
royalties, native title interests, historical sites, wilderness or
national park and environmental settings
§ The security of the tenure
held at the time of reporting along with any known impediments to
obtaining a licence to operate in the area
|
The tenements are subject to Land
Access Agreements with Jamukurnu-Yapalikurnu (JYAC) Aboriginal
Corporation on behalf of the Martu People.
The Chilly RC drilling;
§ Occurred on tenement E45/4807 Strickland which is 100% owned
by Rio Tinto Exploration Pty and is the subject of an agreement
where Greatland is farming in (the Paterson South farm-in), but has
not yet earned an interest.
§ Sits
within the Martu category IV Indigenous Protection Area.
Discussions with JYAC and the Martu state that there is allowance
made for mining within Cat IV IPAs.
The Gravity survey at Atlantis
occurs on tenement E45/4815 and is also subject to the Paterson
South farm-in.
Diamond drilling on E45/5351 Skylar
and E45/5532 Triangle South at the Bootstrap and Teague prospects
respectively are subject to the Paterson South farm-in.
London diamond drilling occurs on
E45/4701 - Scallywag which is 100% owned by Greatland Exploration
Pty Ltd, a subsidiary of Greatland Holdings Group Pty
Ltd.
All tenements are considered to be
in good standing.
|
Exploration done by other
parties
|
§ Acknowledgment and appraisal
of exploration by other parties
|
Chilly prospect - (historical
drilling shown on Figure
2); including;
§ 2 x 1km
nominally spaced RAB and AC drilling (ANK and AND
prefix respectively) completed by BHP minerals from 1994. DEMIRS
Annual report number (A)41180 and A46969
§ Regional
drill traverse (GAB prefix) with 200m spaced RAB completed by
Newmont Australia in 1991. A32497
§ Regional
drill traverse (YRG prefix) with 100m spaced AC completed by
Normandy Exploration in 1999. A59473
§ Regional
drill traverse with 100m spaced AC (GPW) traverses across the
magnetic target completed by Gindalbie gold (annual
rept number) A61274
Atlantis Prospect - pre-existing
shallow drilling - completed prior to the advent of modern low
detection limit multielement assays and with modelled depth to
bedrock of +500m suggest this was ineffective.
§ Single
traverse with 7, 400m spaced RAB and 4 individual holes targeting
(HWN prefix) magnetic highs completed in 1989 by Newmont Australia.
A29568
Teague Prospect - Minimal previous
work
§ 2, ~ 4km
spaced shallow RC holes (DWRC prefix) displayed in
Figure 7 and completed by
Reward Minerals in 2014. A106582
Bootstrap Prospect - has had
regional spaced drilling (Figure
7) which did not target the areas currently
being tested.
§ Widely
spaced - 2-8km reconnaissance RAB (ANK prefix) drilled by BHP
Minerals in in 1994 and unlikely to have been effective or hit
bedrock.
§ Widely
spaced ~5km spaced RC drilled by Reward Minerals in 2014. Did not
test the targeted anomalies. A110781
London Prospect - effective diamond
drilling within 600m (Figure
7) completed by Greatland in 2020 was
targeting a magnetic anomaly. The current drilling is targeting an
offset conductor from a magnetotelluric survey.
Regional 1km spaced AC drilling
completed along existing tracks (TEA prefix) is unlikely to have
been effective A84215
Scallywag E45/4701:
§ Historical
work comprised shallow drilling in the north end of the Scallywag
tenement (72 generally aircore holes, averaging 47.3m deep, 4 RAB
holes (average 68m) and 9 RC holes (average 96.3m) by companies
including Newcrest and Normandy Exploration Limited.
§ Historical
reports (WAMEX "A" numbers) are referenced in previous RNS
announcements dated 24 August 2021 and 16 April
2021
|
Geology
|
§ Deposit type, geological
setting and style of mineralisation
|
§ Exploration is for intrusion related and orogenic,
structurally controlled Au-Cu deposits similar to Telfer, Havieron
and Winu, all located in Neo-Proterozoic Yeneena Group sediments of
the Paterson Province, Western Australia
|
Drill hole
Information
|
§ A summary of all information
material to the understanding of the exploration results including
a tabulation of the following information for all Material drill
holes:
§ easting and northing of the
drill hole collar
§ elevation or RL (Reduced
Level - elevation above sea level in metres) of the drill hole
collar
§ dip and azimuth of the
hole
§ down hole length and
interception depth
§ hole
length
§ If the exclusion of this
information is justified on the basis that the information is not
Material and this exclusion does not detract from the understanding
of the report, the Competent Person should clearly explain why this
is the case
|
§ Greatland
drill hole collar details are listed in - Table 1 for Chilly RC and
Table 2 for Havieron Region drilling.
§ Anomalous
results for Chilly RC are also recorded in Table 1
§ Assay
results are not yet available for Havieron vicinity
drilling.
|
Data aggregation
methods
|
§ In reporting Exploration
Results, weighting averaging techniques, maximum and/or minimum
grade truncations (eg cutting of high grades) and cut-off grades
are usually Material and should be stated
§ Where aggregate intercepts
incorporate short lengths of high grade results and longer lengths
of low grade results, the procedure used for such aggregation
should be stated and some typical examples of such aggregations
should be shown in detail
§ The assumptions used for any
reporting of metal equivalent values should be clearly
stated
|
§ Anomalous
results for Chilly RC are recorded in Table 1. The anomalous
sample intervals been selected as follows:
- Au
>=0.1ppm; or
- Cu
>=1000ppm; average grade,
with a maximum consecutive internal
dilution of 4m.
|
Relationship between
mineralis-ation widths and intercept lengths
|
§ These relationships are
particularly important in the reporting of Exploration
Results
§ If the geometry of the
mineralisation with respect to the drill hole angle is known, its
nature should be reported
§ If it is not known and only
the down hole lengths are reported, there should be a clear
statement to this effect (eg 'down hole length, true width not
known')
|
§ All Chilly
RC intercepts reported are downhole and not true width. The
intersected geology is interpreted to be subvertical with drilling
angled at -60o to provide a high angle to expected
bedding parallel mineralisation. The nature of RC drilling is such
that the true orientation of mineralisation intersected is
currently unknown.
|
Diagrams
|
§ Appropriate maps and
sections (with scales) and tabulations of intercepts should be
included for any significant discovery being reported These should
include, but not be limited to a plan view of drill hole collar
locations and appropriate sectional views
|
§ Maps and a
Section are provided in Figures 1-7. No significant discovery is
reported
|
Balanced
reporting
|
§ Where comprehensive
reporting of all Exploration Results is not practicable,
representative reporting of both low and high grades and/or widths
should be practiced to avoid misleading reporting of Exploration
Results
|
§ The
reporting is considered balanced
|
Other substantive exploration
data
|
§ Other exploration data, if
meaningful and material, should be reported including (but not
limited to): geological observations; geophysical survey results;
geochemical survey results; bulk samples - size and method of
treatment; metallurgical test results; bulk density, groundwater,
geotechnical and rock characteristics; potential deleterious or
contaminating substances
|
§ No other
substantive exploration data other than that provided in the
figures
|
Further
work
|
§ The nature and scale of
planned further work (eg tests for lateral extensions or depth
extensions or large-scale step-out drilling)
§ Diagrams clearly
highlighting the areas of possible extensions, including the main
geological interpretations and future drilling areas, provided this
information is not commercially sensitive
|
§ Further
drilling of the Chilly prospect has been proposed internally but
has not advanced to a drill program, however the south eastern 3km
extension of the magnetic linear in Figure
2 is considered prospective.
§ Four
targets for follow up drilling are highlighted at Atlantis
in Figure 6.
§ Further
work at the Teague, London and Bootstrap prospects will be
considered following the return and review of assays for those
prospects.
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