TIDMGGP
RNS Number : 4237T
Greatland Gold PLC
14 November 2019
14 November 2019
Dissemination of a Regulatory Announcement that contains inside
information according to REGULATION (EU) No 596/2014 (MAR).
Greatland Gold plc
("Greatland" or "the Company")
Black Hills - Positive Final Drill Results & New Geophysical
Targets
Drill results confirm the presence of high-grade gold
mineralisation at the Black Hills' Saddle Reefs prospect, including
1m @ 10.96g/t gold from 35m (SRRC011)
Ground gravity surveys identify three new geophysical targets at
Black Hills
Greatland Gold plc (AIM:GGP), the precious and base metals
exploration and development company, is pleased to announce
positive final drill results with several intervals greater than
5g/t gold at its 100% owned Black Hills project in the Paterson
region of Western Australia. The Company is also pleased to report
it has identified three new geophysical targets following the
completion of ground gravity surveys over the Black Hills licence
and adjacent Havieron licence.
A Reverse Circulation ("RC") programme has been completed at
Black Hills with a total of twenty RC holes for 5,846m, drilled to
depths ranging from 154m to 500m. All holes were sampled from
surface to end of hole as four metre composites with single metre
samples analysed in areas of gold anomalism. Final analytical
results have been received for all samples and are reported in this
announcement.
Highlights of Drill Results
-- Results received confirm the presence of high-grade gold
mineralisation at the Saddle Reefs prospect. Best results
include:
o 13m @ 2.01g/t Au from 67m (SRRC012), including
-- 2m @ 7.38g/t Au from 77m
o 12m @ 1.38g/t Au from 32m (SRRC011), including
-- 1m @ 10.96g/t Au from 35m
o 36m @ 0.35g/t Au from surface (0m) (SRRC010)
o 19m @ 0.51g/t Au from 118m (SRRC007)
-- New drill results are considered very positive with several
intervals greater than 5g/t gold, indicating the potential for a
fertile gold system at Black Hills.
New Targets at Black Hills
-- Greatland has completed ground gravity surveys over the
entire Black Hills licence and adjacent Havieron licence, which
have identified three new geophysical targets in the Black Hills
area:
o Parlay - Located in the south-western corner of the Black
Hills licence, the Parlay target includes magnetic and gravity
anomalies on an interpreted key lithological and structural
contact.
o Black Hills North - Located to the north of recent drilling,
Black Hills North comprises coincident gravity, magnetic and IP
anomalies.
o Black Hills South - Located on Greatland's Havieron licence
(E45/4701), Black Hills South is a very high amplitude gravity
anomaly located at the interpreted closure of the Black Hills Dome
to the south of outcrop under relatively thin cover (approximately
50m).
Gervaise Heddle, Chief Executive Officer, commented: "These
exciting drill results at Black Hills confirm the presence of a
near-surface gold system at the Saddle Reefs prospect which
includes high-grade gold mineralisation. In addition, our
systematic exploration approach continues to generate new targets
across the region, including three within the Black Hills area
which have not been tested by historic drilling.
"The results from our drilling and geophysical work at Black
Hills further highlight the exceptional prospectivity of the
Paterson region, which continues to draw in major resource players
to the underexplored province."
In June 2018, Greatland commenced its first exploration campaign
at Black Hills. Surface rock chip sampling located outcropping gold
mineralisation over several hundred metres at the Saddle Reefs
prospect and subsequent geophysical work outlined a large, coherent
chargeability anomaly over 1,400m of strike, subparallel to gold
mineralisation identified at surface. Recent drilling completed at
Black Hills has partially tested the Saddle Reefs prospect and has
confirmed the presence of high-grade gold.
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
Overview of Paterson Project and Black Hills licence
The Company's Paterson project comprises the Havieron, Paterson
Range East, and Black Hills licences, located in the Paterson
region of northern Western Australia. The three licences
collectively cover more than 385 square kilometres and are
prospective for Havieron and Telfer style gold-copper
mineralisation.
The Paterson region is currently one of the most active
exploration areas in Australia. Recent exploration success achieved
by Greatland Gold and Rio Tinto demonstrates the region has been
underexplored, particularly the extensive areas under cover. As
well as hosting several large gold and copper deposits such as
Telfer and Nifty, more recent exploration has outlined several
other deposits including Magnum (Au), Calibre (Au), O'Callaghans
(W, Cu) and Maroochydore (Cu). The region is remote, however
infrastructure is good with several operating mines, roads, formed
tracks and rail networks nearby which branch out from the regional
industrial hub of Port Hedland 500km to the west.
The Black Hills licence, E45/4512, lies 30 km east of the large
Telfer gold mine. Black Hills is a granted exploration licence that
covers 25 square kilometres and sits adjacent to the Company's
Havieron exploration licence. The Black Hills licence is regarded
as having high potential to host gold mineralisation, similar in
style to that seen at Telfer. There has been a considerable amount
of historical exploration work at Black Hills with several discrete
zones of mineralisation identified over 5km of strike. Historical
rock chip samples have returned gold over 10g/t, with free
(visible) gold in places. Historic drill intercepts include 3m at
9.14g/t gold from 26m downhole (incl. 1m at 21.2g/t from 27m
(CBR073)), 1m at 10.0g/t gold from 16m (CBH138), 1m at 4.93g/t from
12m (CBH071) and 1m at 3.12g/t from 37m (NBH004).
Gold prospects identified to date extend from Black Hills into
the north western parts of the Havieron licence. Proterozoic
sandstone and carbonate rocks of the Yeneena Group formations are
present, including the Telfer Formation, in a domal structure which
is the equivalent geology to that of the large Telfer gold deposit
located 30km to the west.
A large amount of historical surface exploration data for the
Black Hills area has been compiled and incorporated into the
Company's database. Gold mineralisation has been outlined at
several prospects throughout the licence including Saddle Reefs,
Eastern, Rogers and Northern Granites (within an area of 6.5km x
2km).
The Company commenced field activities at Black Hills in
mid-2018. Work focused on the Saddle Reefs and Rogers areas,
collecting rock chip samples and locating historical access. The
host sequence of Proterozoic sandstones and limestones outcrop
through relatively thin sand cover. Numerous indications of
mineralisation in bedrock are apparent. Gossanous samples were
collected from outcrop, visible gold recovered from rock chip
samples, and gold nuggets were found in thin sand cover at Saddle
Reefs.
At Saddle Reefs, the mineralised sequence outcrops through a
thin veneer of sand and gravel. Rock chip samples were collected
over a strike length of approximately 800m with results over 10g/t
gold including 81.7g/t, 45.7g/t, 37.6g/t, 33.9g/t, 28.2g/t and
23.5g/t. Many also showed high silver above 10g/t up to a maximum
of 106.1g/t. Gold (and silver) mineralisation in bedrock has been
identified over a strike length of approximately 800m at Saddle
Reefs.
Comprehensive Induced Polarisation ("IP") geophysical work over
Saddle Reefs was undertaken during mid 2018 and early 2019 which
covered a strike length of 2km. Modern 3D inversion models of
resultant IP data were generated. These models outlined a large
chargeability anomaly over 1,400m of strike subparallel to gold
mineralisation identified at surface.
As previously reported, an RC drill program has been completed
at Black Hills with 1m results reported in this announcement. RC
drilling largely focussed on the Saddle Reefs prospect, with
several additional holes into the Saddle Reefs West and Eastern
prospects. A total of twenty RC holes for 5,846m were drilled to
depths ranging from 154m to 500m. Holes were primarily angled at 60
degrees. All holes were sampled from surface to end of hole as four
metre composites and single metre samples, and analysed for a 49
element suite. Single metre samples were analysed where 4m
composites returned gold results of 0.1g/t or greater. Final
analytical results have been received for the 20 holes completed.
The first 13 holes represent three traverses of drill holes across
portions of the Saddle Reefs prospect with highest results of 1m @
10.96g/t gold from 35m (SRRC011) and 2m @ 7.38g/t Au from 77m
(SRRC012). Results received confirm the presence of high-grade gold
mineralisation at the Saddle Reefs prospect. Significant intercepts
are presented in Table 1.
Table 1 - Highlights from 1m Sample Results from Saddle Reefs
Prospect
Hole From To Interval Au (g/t)
ID
SRRC007 118 137 19 0.51
----- ---- --------- ---------
SRRC010 0 36 36 0.35
SRRC011 32 44 12 1.38
incl 35 36 1 10.96
--- --- --- ------
SRRC012 67 80 13 2.01
incl 77 79 2 7.38
---- ---- --- -----
100 122 22 0.50
---- ---- --- -----
incl 106 107 1 4.92
---- ---- --- -----
Mineralisation intersected in RC drilling at the Saddle Reefs
prospect is associated with fine grained sandstones and quartzite.
Drill hole collar details and significant intercepts are presented
in Appendix I, and additional drill hole information is presented
in Appendix II.
These new results which include high-grade gold intercepts are
considered very positive with several intervals greater than 5g/t
Au indicating the potential for a fertile gold system at Black
Hills. The project remains at an early stage and requires further
investigation. Studies being undertaken at present include
determination of local scale controls on mineralisation and
integration of Black Hills drill data into the regional geological
framework.
Along with drilling activities, the Company has recently
completed ground gravity surveys over the entire Black Hills
licence and adjacent Havieron licence, which have identified three
new targets in the Black Hills area. A ground gravity survey was
conducted over the entire Black Hills licence; gravity data was
collected on a spacing of 400m by 200m for a total number of 328
stations. Gravity data has been processed and imaged and integrated
with detailed airborne magnetic data over the Black Hills and
Havieron licences which has revealed three previously unrecognised
targets. These new targets have not been tested by historic
drilling and are described below.
-- Parlay - Coincident magnetic and gravity anomalies on
interpreted key lithological and structural contact.
-- Black Hills North - Coincident gravity, magnetic and IP anomalies.
-- Black Hills South - Very high amplitude gravity anomaly
located at the interpreted closure of the Black Hills Dome to the
south of outcrop under relatively thin cover (approximately
50m).
These new targets are additional to those recently announced
from the Havieron and Paterson Range East licences. Further work
may include local scale electrical geophysics and drill testing as
required.
Competent Person:
Information in this announcement that relates to exploration
results is based on information compiled by Mr Mick Sawyer who is a
member of the Australian Institute of Geoscientists and is a
Registered Professional Geoscientist (R.P.Geo #10194). Mr Sawyer is
Exploration Manager and a full-time employee of Greatland Pty Ltd,
and holds employee options in Greatland Gold plc. Mr Sawyer has
sufficient experience relevant to the style of mineralisation and
type of deposit under consideration and to the activity which has
been undertaken 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.
Mr Sawyer consents to the inclusion in the announcement of the
matters based on their information in the form and context in which
it appears.
Information in this announcement that relates to Black Hills
project exploration results has been extracted from the following
announcements:
"Multiple Targets at Paterson Range East", dated 6 November
2019
"New Drill Targets at Scallywag", dated 30 October 2019
"Exploration Update - Black Hills Drill Results", dated 23
September 2019
"Rio Tinto Exploration Update - Winu project", dated 1 August
2019
"First Drilling Campaign Commences at Black Hills", dated 9 July
2019
"Rio Tinto Exploration Update - Winu project" dated 6 June
2019
"Black Hills - Positive IP Results and Drill Update", dated 30
May 2019
"Greatland Commences 2019 Field Exploration Campaign at Black
Hills", dated 7 May 2019
"Rio Tinto Exploration Update - copper-gold mineralisation
discovered in the Paterson Province in the far east Pilbara region
of Western Australia" dated 27 Feb 2019
"Large New Geophysical Target at Saddle Reefs", dated 29 October
2018
"High Grade Gold Detected in Samples at Black Hills", dated 4
September 2018
"Black Hills Update", dated 17 July 2018
"Black Hills: Further Gold Found in Surface Samples", dated 2
July 2018
"Greatland Discovers Gold Nuggets at Black Hills", dated 21 June
2018
Additional information on the project can be found on the
Company's web site at www.greatlandgold.com/paterson/
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
Enquiries:
Greatland Gold PLC
Gervaise Heddle/Callum Baxter
Tel: +44 (0)20 3709 4900
Email: info@greatlandgold.com
www.greatlandgold.com
SPARK Advisory Partners Limited (Nominated Adviser)
Andrew Emmott/James Keeshan
Tel: +44 (0)20 3368 3550
SI Capital Limited (Joint Broker)
Nick Emerson/Alan Gunn
Tel: +44 (0)14 8341 3500
Numis Securities Limited (Joint Broker)
John Prior/Paul Gillam/Alamgir Ahmed
Tel: +44 (0)20 7260 1000
Luther Pendragon (Media and Investor Relations)
Harry Chathli/Alexis Gore/Joe Quinlan
Tel: +44 (0)20 7618 9100
Notes for Editors:
Greatland Gold plc is a London Stock Exchange AIM-listed
(AIM:GGP) natural resource exploration and development company with
a current focus on gold, copper and nickel exploration
projects.
The Company has six main projects; four situated in Western
Australia and two in Tasmania. All projects are 100% owned by
Greatland.
In March 2019, Greatland signed a Farm-in Agreement with
Newcrest Operations Limited, a wholly-owned subsidiary of Newcrest
Mining Limited (ASX:NCM), to explore and develop Greatland's
Havieron gold-copper project in the Paterson region of Western
Australia. Newcrest has the right to acquire up to a 70% interest
in a 12-block area within E45/4701 that covers the Havieron target
by spending up to US$65 million.
Greatland is seeking to identify large mineral deposits in areas
that have not been subject to extensive exploration previously. It
is widely recognised that the next generation of large deposits
will come from such under-explored areas and Greatland is applying
advanced exploration techniques to investigate a number of
carefully selected targets within its focused licence
portfolio.
The Company is also actively investigating a range of new
opportunities in precious and strategic metals and will update the
market on new opportunities as and when appropriate.
APPIX I
DRILLHOLE DATA - Black Hills Project
Black Hills 2019 RC Drilling - Collar Locations (GDA94
Zone51)
Hole Prospect Northing Easting RL Depth Azimuth Dip Assay
ID
SRRC001 Saddle Reefs 7610279 444938 268 304 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC002 Saddle Reefs 7610348 445049 263 298 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC003 Saddle Reefs 7610487 445237 261 298 235 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC004 Saddle Reefs 7610550 445338 269 350 235 -75 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC005 Saddle Reefs 7609821 445772 271 298 235 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC006 Saddle Reefs 7609622 445473 262 500 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC007 Saddle Reefs 7609521 445331 259 298 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC008 Saddle Reefs 7609402 445184 255 298 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC009 Saddle Reefs 7609292 445035 255 298 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC010 Saddle Reefs 7610543 445131 260 154 235 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC011 Saddle Reefs 7610561 445186 260 154 235 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC012 Saddle Reefs 7610486 445067 260 154 235 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC013 Saddle Reefs 7610449 445093 264 298 235 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
Saddle Reefs
SRRC014 West 7609417 444090 249 262 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
Saddle Reefs
SRRC015 West 7609535 444229 248 358 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
Saddle Reefs
SRRC016 West 7609641 444381 249 358 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC017 Saddle Reefs 7608546 445646 249 300 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC018 Saddle Reefs 7608635 445870 253 300 55 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC019 Eastern 7609373 446778 249 287 235 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
SRRC020 Eastern 7609695 446239 270 279 255 -60 Complete
-------------- --------- -------- ---- ------ -------- ---- ---------
Black Hills 2019 RC Drilling - Significant Intercepts from
Single Metre Samples
Reporting Criteria: Intercepts reported are greater than or
equal to 1m, greater than or equal to 0.1 ppm Au, with maximum
consecutive internal dilution of 4m, and greater than or equal to
2.0 ppm Au with zero internal dilution. Au grades are reported to
two significant figures.
Hole From To Interval Au (g/t)
ID
SRRC001 31 40 9 0.22
--------- ------ --------- ---------
SRRC002 57 58 1 0.39
SRRC002 142 145 3 0.34
--------- ------ --------- ---------
SRRC003 60 66 6 0.67
SRRC004 0 7 7 0.29
SRRC005 158 159 1 0.33
SRRC006 50 51 1 0.13
SRRC006 189 199 10 0.20
--------- ------ --------- ---------
SRRC006 276 277 1 0.38
--------- ------ --------- ---------
SRRC007 100 111 11 0.64
incl 106 107 1 5.50
--------- ------ --------- ---------
SRRC007 118 137 19 0.51
--------- ------ --------- ---------
incl 119 120 1 2.93
--------- ------ --------- ---------
SRRC008 256 263 7 0.22
SRRC008 272 284 12 0.37
--------- ------ --------- ---------
SRRC009 270 273 3 0.28
SRRC010 0 36 36 0.35
SRRC010 73 82 9 0.19
--------- ------ --------- ---------
SRRC010 93 96 3 0.21
--------- ------ --------- ---------
SRRC011 32 44 12 1.38
incl 35 36 1 10.96
--------- ------ --------- ---------
SRRC012 52 53 1 0.52
SRRC012 67 80 13 2.01
--------- ------ --------- ---------
incl 68 69 1 4.55
--------- ------ --------- ---------
incl 70 71 1 3.68
--------- ------ --------- ---------
incl 77 79 2 7.38
--------- ------ --------- ---------
SRRC012 85 90 5 0.13
--------- ------ --------- ---------
SRRC012 100 122 22 0.50
--------- ------ --------- ---------
incl 106 107 1 4.92
--------- ------ --------- ---------
SRRC013 17 24 7 0.16
SRRC013 32 39 7 0.14
--------- ------ --------- ---------
SRRC013 78 79 1 0.12
--------- ------ --------- ---------
SRRC013 84 86 2 0.59
--------- ------ --------- ---------
SRRC013 117 134 17 0.38
--------- ------ --------- ---------
SRRC014 No significant
results
SRRC015 No significant
results
---------
SRRC016 No significant
results
--------- ----------------- --------- ---------
SRRC017 176 178 2 0.40
SRRC018 102 106 4 0.37
SRRC018 120 121 1 0.20
--------- ------ --------- ---------
SRRC018 138 139 1 0.64
--------- ------ --------- ---------
SRRC019 68 69 1 0.38
SRRC020 No significant
results
---------
APPIX II
JORC Code 2012 Table 1 - Black Hills Project
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections)
Criteria Explanation
Sampling 2019 Reverse Circulation Drilling
techniques * Nature and quality of sampling (eg cut channels, (RC)
random chips, or specific specialised industry * Prospects have been drilled by 20 RC drill holes,
standard measurement tools appropriate to the totalling 5,846m, with an average hole depth of
minerals under investigation, such as down hole gamma 290m.
sondes, or handheld XRF instruments, etc). These
examples should not be taken as limiting the broad
meaning of sampling. * Assays have been received for all 20 2019 RC drill
holes.
* Include reference to measures taken to ensure sample
representivity and the appropriate calibration of any * RC drill holes were drilled at three separate areas
measurement tools or systems used. testing geophysical and geochemical targets.
* Aspects of the determination of mineralisation that * Locations and orientation of 2019 drill holes for
are Material to the Public Report. In cases where this release are tabulated in the appendices of the
'industry standard' work has been done this would be report.
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 RC Sampling
as where there is coarse gold that has inherent * RC sampling was carried out using Greatland internal
sampling problems. Unusual commodities or protocols and QAQC procedures.
mineralisation types (eg submarine nodules) may
warrant disclosure of detailed information.
* One metre samples were collected from the cyclone
into individual alpha-numeric calico bags.
* RC samples were initially composited to 4m lengths
via 'spear' sampling the individual 1m intervals.
Samples were then taken to the laboratory, pulverise
d
and analysed.
* 1m RC samples were then taken to the laboratory,
pulverised and analysed.
Ground Gravity Geophysical
Survey
* A ground gravity geophysical survey was undertaken
during July to September 2019, by Atlas Geophysics
Pty Ltd, an independent geophysical acquisition
contractor.
* The survey employed the following sampling
techniques: Ground Gravity and DGPS survey.
* The survey used the following sampling equipment:
Method: Ground Gravity and DGPS
Array: 400m x 200m grid
Gravity Instrument: 2x Scintrex
CG-5 Autograv Gravity Meters
(SN: 40361, 40240).
DGPS Instrument: 2x Leica System
1200 GNSS Rover Receivers, 1x
Leica System 1200 GNSS Base
Receiver.
------------------------------------------------------------- -----------------------------------------------------------------------
Drilling RC Drilling
techniques * Drill type (eg core, reverse circulation, open-hole * RC drilling was undertaken using a truck mounted
hammer, rotary air blast, auger, Bangka, sonic, etc) KWL700. Depth capacity of the drill rig is
and details (eg core diameter, triple or standard approximately 600m. The drill rig utilised an onboard
tube, depth of diamond tails, face-sampling bit or compressor (1200 cfm, 350/500 psi) and auxiliary
other type, whether core is oriented and if so, by booster (1250 cfm, 850 psi).
what method, etc).
* Drill holes were collared using a 7 1/2 inch RC bit
to 25-35m, followed by 5-5/8 inch RC bit to end of
hole.
------------------------------------------------------------- -----------------------------------------------------------------------
Drill sample RC Sampling
recovery * Method of recording and assessing core and chip * RC sample recovery and quality was recorded via
sample recoveries and results assessed. visual estimation of sample volume and the condition
of drill spoils.
* Measures taken to maximise sample recovery and ensure
representative nature of the samples. * Recovery ranges from 90-100%, with only occasional
recoveries of less than 70%. Sample recovery was
maximized by maintaining dry samples (dry drilling
* Whether a relationship exists between sample recovery conditions) as much as possible.
and grade and whether sample bias may have occurred
due to preferential loss/gain of fine/coarse
material. * Due to consistently high recoveries, no relationship
between grade and recovery is evident.
------------------------------------------------------------- -----------------------------------------------------------------------
Logging
* Whether core and chip samples have been geologically * All RC drill samples were geologically logged for
and geotechnically logged to a level of detail to lithology, mineralogy, alteration, veining and
support appropriate Mineral Resource estimation, sulphide occurrences. This logging includes both
mining studies and metallurgical studies. qualitative and quantitative components.
* Whether logging is qualitative or quantitative in * Logging is recorded directly into a laptop computer
nature. Core (or costean, channel, etc) photography. using 'LogChief' - geological logging software. This
software has 'look-up tables' that do not allow for
invalid entries. Additional validation is then
* The total length and percentage of the relevant carried out when data is transferred to Greatlands
intersections logged. database managers.
* All samples are analysed in the field using a pXRF
(Olympus Vanta M-series) for the purpose of
geochemical interpretation.
------------------------------------------------------------- -----------------------------------------------------------------------
Sub-sampling
techniques * If core, whether cut or sawn and whether quarter, * One metre samples were collected from the cyclone
and sample half or all core taken. into individual alpha-numeric calico bags.
preparation
* If non-core, whether riffled, tube sampled, rotary * 1m RC samples were taken to the laboratory,
split, etc and whether sampled wet or dry. pulverised and analysed.
* For all sample types, the nature, quality and * RC sample preparation was completed at Intertek
appropriateness of the sample preparation technique. Laboratory in Perth using industry standard
procedures (dry, crush and pulverise for 85% at
75um). This sample is then split into sub-samples for
* Quality control procedures adopted for all analysis.
sub-sampling stages to maximise representivity of
samples.
* The sample sizes are considered appropriate for the
style of mineralisation encountered in the region.
* 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.
------------------------------------------------------------- -----------------------------------------------------------------------
Quality RC Drilling Analytical Techniques
of assay * The nature, quality and appropriateness of the * All samples were dried, crushed and pulverised to
data and assaying and laboratory procedures used and whether produce suitable sub-samples for Au analysis (via
laboratory the technique is considered partial or total. Fire Assay), and Multi-Element analysis (via
tests four-acid digestion ICP-MS).
* For geophysical tools, spectrometers, handheld XRF
instruments, etc, the parameters used in determining * Au analysis - 25g Fire Assay/ICP-OES (detection limit
the analysis including instrument make and model, of 0.005ppm).
reading times, calibrations factors applied and their
derivation, etc.
* Multi-Element analysis - four acid digestion ICP-MS
(for Ag, Al, As, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs,
* Nature of quality control procedures adopted (eg Cu, Fe, Ga, Ge, Hf, In, K, La, Li, Mg, Mn, Mo, Na, Nb,
standards, blanks, duplicates, external laboratory Ni, P, Pb, Rb, Re, S, Sb, Sc, Se, Sn, Sr, Ta, Te, Th,
checks) and whether acceptable levels of accuracy (ie Ti, TI, U, V, W, Y, Zn, Zr).
lack of bias) and precision have been established.
* No geophysical tools were used for any element
concentrations in this report.
* All samples are analysed in the field using a pXRF
(Olympus Vanta M-series) for the purpose of
geochemical interpretation. This data is for internal
company use only.
* Quality Control procedures in the field involve the
use of certified reference material (CRM's) for assay
standards and blanks. CRM's are inserted 1 in every
25 samples. Quality control results were considered
acceptable.
* In addition to Greatland supplied CRM's, Intertek
Laboratory includes CRM's in each sample batch they
receive for analysis.
Ground Gravity Geophysical
Survey
* A ground gravity geophysical survey was undertaken
during July to September 2019 on E45/4512 (Black
Hills), by Atlas Geophysics Pty Ltd, an independent
geophysical acquisition contractor.
* The survey consisted of 328 gravity stations
collected on 400m x 200m grid.
* Data QAQC was completed by the acquisition contractor
and verified by an independent consultant
geophysicist using industry standard Windisp
software.
* Data QAQC showed that the obtained data is of
moderate quality.
* Processing and 3D modelling of the data was completed
by an independent consultant geophysicist using
industry standard Windisp and 3DMGINV software.
* The derived subsurface geophysical models of density
are interpreted with a high degree of confidence.
------------------------------------------------------------- -----------------------------------------------------------------------
Verification RC Drilling
of sampling * The verification of significant intersections by * Significant intersections have been verified by
and assaying either independent or alternative company personnel. company personnel.
* The use of twinned holes. * No twin holes have been drilled.
* Documentation of primary data, data entry procedures, * Logging is recorded directly into a laptop computer
data verification, data storage (physical and using 'LogChief' - geological logging software. This
electronic) protocols. software has 'look-up tables' that do not allow for
invalid entries. Additional validation is then
carried out when data is transferred to Greatlands
* Discuss any adjustment to assay data. database managers.
* No adjustments have been made to any assay data.
Ground Gravity Geophysical
Survey
* Data QAQC was completed by the acquisition contractor
and verified by an independent consultant
geophysicist.
------------------------------------------------------------- -----------------------------------------------------------------------
Location Location information - RC Drilling
of data * Accuracy and quality of surveys used to locate drill * Drill hole collar locations were surveyed using a
points holes (collar and down-hole surveys), trenches, mine handheld Garmin 64ST GPS (accuracy of +/- 5m).
workings and other locations used in Mineral Resource
estimation.
* All coordinates are in GDA94 Zone51.
* Specification of the grid system used.
* RL is measured using a handheld GPS.
* Quality and adequacy of topographic control.
* Inclined RC drill holes are checked for drill rig
set-up azimuth using a Suunto Sighting compass.
* Inclination of drill holes is set by the driller
using a clinometer on the mast of the drill rig.
* Down hole surveys were conducted at 50m intervals
using a 'north seeking gyro' instrument.
Ground Gravity Geophysical
Survey
* Lecia 1200 GNSS DGPS system was used to determine X,Y,
Z for each gravity station.
------------------------------------------------------------- -----------------------------------------------------------------------
Data spacing RC Drilling
and * Data spacing for reporting of Exploration Results. * Three areas were drilled for the 2019 RC program. At
distribution these three areas, drill hole spacing is
approximately 140m. Drill hole orientation is
* Whether the data spacing and distribution is perpendicular to the strike direction of the local
sufficient to establish the degree of geological and geology.
grade continuity appropriate for the Mineral Resource
and Ore Reserve estimation procedure(s) and
classifications applied. * Sample compositing has been applied to some of the
data. 4m composites were initially used for the 2019
drill program. 1m intervals of interest identified
* Whether sample compositing has been applied. from the 4m composites were then forwarded to the
laboratory.
* Data spacing is not sufficient for the reporting of
Mineral Resources.
* A large amount of historic shallow surface
exploration has been conducted at the Black Hills
project. Most historic holes are shallow (
Ground Gravity Geophysical
Survey
* The survey consisted of 328 new gravity stations
collected on 400m x 200m grid.
------------------------------------------------------------- -----------------------------------------------------------------------
Orientation RC Drilling
of data * Whether the orientation of sampling achieves unbiased * Drill holes were oriented perpendicular to strike of
in relation sampling of possible structures and the extent to the local geology.
to which this is known, considering the deposit type.
geological
structure * No relationship is known between key mineralizing
* If the relationship between the drilling orientation structures and the orientation of drilling.
and the orientation of key mineralised structures is
considered to have introduced a sampling bias, this
should be assessed and reported if material. Ground Geophysical Survey
* The grid geometry (east-west) is approximately
perpendicular to regional geological strike.
------------------------------------------------------------- -----------------------------------------------------------------------
Sample RC Drilling/Sampling
security * The measures taken to ensure sample security. * Sample security is managed by Greatland internal
protocols. Samples are taken from site by Greatland
or their representatives to Port Hedland, and
transported to the laboratory in Perth.
------------------------------------------------------------- -----------------------------------------------------------------------
Audits or RC Drilling/Sampling
reviews * The results of any audits or reviews of sampling * No audits have been completed.
techniques and data.
* No reviews are considered required as the project is
in early phase of exploration.
Ground Geophysical Survey
* Data QAQC was completed by the acquisition contractor
(Atlas Geophysics Pty Ltd) and verified by an
independent consultant geophysicist (Montanna GIS Pty
Ltd).
* QAQC of the processed gravity data and derived
subsurface density model was verified by an
independent consultant geophysicist (Montanna GIS Pty
Ltd).
------------------------------------------------------------- -----------------------------------------------------------------------
Section 2 Reporting of Exploration Results
(Criteria in the preceding section also apply to this
section)
Criteria Explanation
Mineral
tenement * Type, reference name/number, location and ownership * The Black Hills Project is located wholly within the
and land including agreements or material issues with third following Exploration Licence:
tenure status parties such as joint ventures, partnerships,
overriding royalties, native title interests,
historical sites, wilderness or national park and * E45/4512 (granted)
environmental settings.
* Greatland Pty Ltd holds a 100% interest in E45/4512
* 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. * Newcrest Operations Limited holds right of first
refusal as per Farm-in Agreement dated 12th March
2019.
* The tenements are in 'good standing' with the WA -
DMIRS.
* No known impediments exist, including a licence to
operate in the area.
------------------------------------------------------------- ------------------------------------------------------------------
Exploration
done by other * Acknowledgment and appraisal of exploration by other * Exploration in the area of the Black Hills project
parties parties. has involved the following companies:
* CBM (1974--1989)
* Peko (-- 1978)
* Marathon Petroleum (--1979)
* Western Mining Corporation (1980--1981)
* Duval (1984)
* Malateur (1985--1986)
* Newmont (1986-1996)
* Freeport (1987--1988)
* Newcrest (1995--1997)
* Normandy Exploration (1998--1999)
* Croesus Mining (2000--2001)
* Opus Exploration (2001--2002)
* Range River Gold (2003--2005)
* Newcrest (2009--2015)
------------------------------------------------------------- ------------------------------------------------------------------
Geology
* Deposit type, geological setting and style of * Paterson Province Geological Setting:
mineralisation.
* Proterozoic meta-sedimentary rocks. Mineralisation
styles include: Stratigraphic/contact controlled gold,
vein and reef style gold/copper stockwork.
* At Saddle Reefs, mineralisation is hosted in fine
grained sandstones with minor interbedded siltstones.
In other parts of the project area, mineralisation is
associated with fine grained quartzites.
------------------------------------------------------------- ------------------------------------------------------------------
Drill hole
Information * A summary of all information material to the * Reports prepared by Greatland Pty Ltd on the Black
understanding of the exploration results including a Hills project are available to view on:
tabulation of the following information for all www.greatlandgold.com
Material drill holes:
* Other information regarding the exploration area can
* easting and northing of the drill hole collar be found in historic exploration reports, available
in previous Western Australia DMIRS reports.
* elevation or RL (Reduced Level - elevation above sea
level in metres) of the drill hole collar * A table with drill hole collar details and
significant intersections accompanies the report.
* 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.
------------------------------------------------------------- ------------------------------------------------------------------
Data
aggregation * In reporting Exploration Results, weighting averaging * Aggregated intervals have been length weighted.
methods techniques, maximum and/or minimum grade truncations
(eg cutting of high grades) and cut-off grades are
usually Material and should be stated. * Reporting Criteria 1m samples: Intercepts reported
are greater than or equal to 1m, greater than or
equal to 0.1 ppm Au, with maximum consecutive
* Where aggregate intercepts incorporate short lengths internal dilution of 4m; and greater than or equal to
of high grade results and longer lengths of low grade 1m, greater than or equal to 2ppm Au with zero
results, the procedure used for such aggregation internal dilution. Au grades are reported to two
should be stated and some typical examples of such significant figures.
aggregations should be shown in detail.
* Higher grade gold intervals within broader zones of
* The assumptions used for any reporting of metal lower grade intervals are reported as included
equivalent values should be clearly stated. intervals.
------------------------------------------------------------- ------------------------------------------------------------------
Relationship
between * These relationships are particularly important in the * The geometry of mineralisation with respect to drill
mineralisation reporting of Exploration Results. hole orientation is not known.
widths and
intercept
lengths * If the geometry of the mineralisation with respect to * Intervals are down hole lengths, true widths not
the drill hole angle is known, its nature should be known.
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').
------------------------------------------------------------- ------------------------------------------------------------------
Diagrams
* Appropriate maps and sections (with scales) and * Appropriate diagrams (plans/sections) are available
tabulations of intercepts should be included for any with this report.
significant discovery being reported These should
include, but not be limited to a plan view of drill
hole collar locations and appropriate sectional
views.
------------------------------------------------------------- ------------------------------------------------------------------
Balanced
reporting * Where comprehensive reporting of all Exploration * The company believes this announcement is a balanced
Results is not practicable, representative reporting report, and that all material information has been
of both low and high grades and/or widths should be reported.
practiced to avoid misleading reporting of
Exploration Results.
------------------------------------------------------------- ------------------------------------------------------------------
Other
substantive * Other exploration data, if meaningful and material, * Previous exploration results included in this
exploration should be reported including (but not limited to): announcement can be found on the company website:
data geological observations; geophysical survey results; www.greatlandgold.com
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.
------------------------------------------------------------- ------------------------------------------------------------------
Further work
* The nature and scale of planned further work (eg * Planned further work includes geological and
tests for lateral extensions or depth extensions or geochemical investigation of drill results.
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.
------------------------------------------------------------- ------------------------------------------------------------------
This information is provided by RNS, the news service of the
London Stock Exchange. RNS is approved by the Financial Conduct
Authority to act as a Primary Information Provider in the United
Kingdom. Terms and conditions relating to the use and distribution
of this information may apply. For further information, please
contact rns@lseg.com or visit www.rns.com.
END
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