TIDMGGP
RNS Number : 4600S
Greatland Gold PLC
06 November 2019
6 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")
Greatland identifies multiple targets at Paterson Range East
Comprehensive geophysical surveys covering entire Paterson Range
East licence identify multiple high-priority targets
Greatland Gold plc (AIM: GGP), the precious and base metals
exploration and development company, is pleased to announce that it
has identified multiple targets at its Paterson Range East licence
following completion of comprehensive geophysical surveys conducted
over the entire licence area.
The Paterson Range East licence, E45/4928, is 100% owned by
Greatland and lies approximately 25 kilometres north of the
Company's Havieron gold-copper prospect. The licence covers 224
square kilometres of Proterozoic basement rocks prospective for
Havieron style gold-copper mineralisation.
A comprehensive ground gravity survey has been completed at
Paterson Range East. A total of 3,736 new gravity stations were
collected over the entire tenement at a spacing of 400m by 200m,
with station spacing closed to 200m by 200m over selected magnetic
anomalies. Results from the ground gravity survey have been
received and modelled in conjunction with previously announced
detailed airborne magnetic data, and are reported in this
announcement.
Key Highlights of Results and Modelling
-- Eight high-priority targets have been identified following
modelling of detailed magnetic and gravity data, including four
primary targets:
o Goliath: Originally identified as a very high amplitude,
bulls-eye magnetic feature in Greatland's recent aeromagnetic
survey, new data shows a very large amplitude gravity anomaly
semi-coincident with the magnetic anomaly.
o Los Diablos: A bulls-eye, high intensity magnetic anomaly
located in a structurally favourable position with a gravity
response of moderate to high amplitude coincident with the magnetic
feature.
o Prefect: A high amplitude magnetic anomaly with a
semi-coincident moderate amplitude gravity response.
o Atlantis: Characterised by two distinct east-west trending
high amplitude magnetic anomalies on the western edge of the
tenement, new ground gravity data has defined three target areas
within Atlantis.
-- Mobile Metal Ion ("MMI") sampling has been completed at 200m
by 200m sample spacing over all key Paterson Range targets. MMI
results are pending and will be incorporated with latest data sets
to prioritise targets for further geophysical work and drill
testing.
-- Limited historical drilling was conducted in the early 1990s
at each of the four primary targets but drilling failed to
adequately test these targets with most holes too shallow to
intersect the modelled anomalies.
Gervaise Heddle, Chief Executive Officer, commented: "The
results from the recent geophysical surveys at Paterson Range East
further advance our knowledge and understanding of an underexplored
part of the Paterson which has outstanding potential to host
tier-one gold-copper deposits. In particular, the Los Diablos and
Prefect targets share very similar geophysical characteristics to
Havieron, and appear to be under significantly less cover than
Havieron.
"Our systematic exploration programmes across the Paterson Range
East and Scallywag prospect areas this year have successfully
highlighted a dozen high-priority targets. We look forward to
advancing this exciting set of opportunities as we continue to
accelerate our exploration activities in the Paterson region."
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 Paterson Range East 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 Telfer style gold-copper deposits, and Havieron
style gold-copper mineralisation.
The Paterson region is currently one of the most active
exploration areas in Australia. Recent exploration success achieved
by Greatland 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 Paterson Range East licence, E45/4928, lies approximately 25
kilometres north of the Havieron gold-copper prospect. The Havieron
prospect is currently under a Farm-In agreement with Newcrest
Operations Limited, while Paterson Range East remains 100% owned
and operated by Greatland. The Paterson Range East licence covers
224 square kilometres of Proterozoic basement rocks prospective for
Havieron style gold-copper mineralisation. Basement rocks are
covered by varying amounts of younger Permian sediments ranging in
depth from less than 100m up to more than 400m based on sparse
historical drilling.
It is widely recognised that additional gold-copper discoveries
in the Paterson will come from areas under cover, and that
geophysics is a critical component of the discovery process.
Greatland continues to apply its proven expertise at Paterson Range
East through a systematic approach to exploring under cover in the
Paterson region.
Basement rocks at Paterson Range East are interpreted to be
predominantly calcareous rich sandstones intruded by several late
stage granitic bodies. Historically, several of these targets have
been subject to initial first-pass work, including limited drilling
by Newcrest Mining Limited ("Newcrest") in the early 1990s, and
show promise at hosting mineralisation as seen at Havieron.
A detailed, low-level 50m line spaced aeromagnetic survey was
collected over Havieron in 2005 (by a previous operator) and this
data was critical in delineation and drill targeting for
Greatland's highly successful 2018 campaign (HAD001-HAD009). To
expand this successful approach, Greatland commissioned a detailed,
low-level airborne magnetic survey to cover the entire Paterson
Range East licence. The survey comprised approximately 5,200 line
kilometres at a line spacing of 50m with a mean terrain clearance
of 40m. Previous aeromagnetic coverage of the area included 200m
and 400m line spaced surveys.
A comprehensive ground gravity survey has been completed at
Paterson Range East. A total of 3,736 new gravity stations were
collected over the entire tenement at a spacing of 400m by 200m
with local infill at 200m by 200m over selected magnetic anomalies.
Results from the recent ground gravity survey have been received
and modelled, and are reported in this announcement.
Four primary targets and four secondary targets have been
identified following modelling of the detailed magnetic and gravity
data. MMI sampling has been completed at 200m by 200m sample
spacing over all targets with results pending. The four primary
targets are described below.
New Primary Targets within Paterson Range East
Goliath: Originally identified as a very high amplitude
bulls-eye magnetic feature in Greatland's recent aeromagnetic
survey, Goliath is interpreted to be a metasedimentry dome with the
magnetic anomaly at the fold hinge position. New gravity data shows
a very large amplitude anomaly semi-coincident with the magnetic
anomaly. Three historic drill holes were completed in the early
1990s off the northern edge of the magnetic anomaly failed to reach
Proterozoic basement (OCE0102 - hole depth 88m).
Los Diablos: A bulls-eye high intensity magnetic anomaly located
in a structurally favourable position (interpreted hinge zone of a
folded sequence of metasedimentary rocks). The gravity response is
of moderate to high amplitude and coincident with the magnetic
feature. Three historic holes targeting the southern edge of the
magnetic anomaly were drilled in the early 1990's. These holes
failed to adequately test the magnetic and gravity anomalies (CAW07
- hole depth 70m).
Prefect: A high amplitude magnetic anomaly with a
semi-coincident moderate amplitude gravity anomaly. One historic
hole drilled in 1995 (PRD9501 hole depth 192m) penetrated basement
and drilled metasediments, a diorite dyke and granite. The centre
of the gravity response is 200m west of the historic drill hole,
whilst the magnetic feature has not been adequately tested due to
its depth extent.
Atlantis: Characterised by two distinct east-west trending high
amplitude magnetic anomalies on the western edge of the tenement.
Ground gravity surveying has defined three targets. The northern
most target was drilled in 1995 (ATD9501 - hole depth 267.6m).
Greatland's 3D modelling of the magnetic data suggests this hole
was terminated prematurely. The remaining targets are untested.
Further work may include Induced Polarisation ("IP") and
Electromagnetic ("EM") geophysical surveys to refine drill
targeting.
Additional information on the Paterson Range East licence can be
found at the Company's web site: www greatlandgold.com
In addition to this release, a PDF version of this report, with
supplementary information can be found at the Company's web site
www.greatlandgold.com/media/jorc
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 Paterson Range
East exploration results has been extracted from the following
announcements:
"Rio Tinto Exploration Update - Winu project", dated 1 August
2019
"Paterson Range East - Results and Exploration Update", dated 15
July 2019
"Exploration to Commence at Paterson Range East", dated 22 May
2019
"Rio Tinto Exploration Update - Winu project" dated 6 June
2019
"Rio Tinto Exploration Update - copper-gold mineralisation
discovered in the Paterson Province in the far eat Pilbara region
of Western Australia" dated 27 Feb 2019
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.
JORC Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections)
Criteria Explanation Commentary
Sampling GROUND GRAVITY GEOPHYSICAL SURVEY
techniques * Nature and quality of sampling (eg cut channels, * A ground gravity geophysical survey was undertaken
random chips, or specific specialised industry during July to September 2019, by Atlas Geophysics
standard measurement tools appropriate to the Pty Ltd, an independent geophysical acquisition
minerals under investigation, such as down hole gamma contractor.
sondes, or handheld XRF instruments, etc). These
examples should not be taken as limiting the broad
meaning of sampling. * The survey employed the following sampling
techniques: Ground Gravity and DGPS survey.
* Include reference to measures taken to ensure sample
representivity and the appropriate calibration of any * The survey used the following sampling equipment:
measurement tools or systems used.
Method: Ground Gravity and DGPS
* Aspects of the determination of mineralisation that Array: 400x200m and 200x200m grids
are Material to the Public Report. In cases where Gravity Instrument: 2x Scintrex
'industry standard' work has been done this would be CG-5 Autograv Gravity Meters (SN:
relatively simple (eg 'reverse circulation drilling 40361, 40240).
was used to obtain 1 m samples from which 3 kg was DGPS Instrument: 2x Leica System
pulverised to produce a 30 g charge for fire assay'). 1200 GNSS Rover Receivers, 1x
In other cases more explanation may be required, such Leica System 1200 GNSS Base Receiver.
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.
------------------------------------------------------------- --------------------------------------------------------------
Drilling
techniques * Drill type (eg core, reverse circulation, open-hole * This release has no reference to previously
hammer, rotary air blast, auger, Bangka, sonic, etc) unreported drill results.
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).
------------------------------------------------------------- --------------------------------------------------------------
Drill sample
recovery * Method of recording and assessing core and chip * This release has no reference to previously
sample recoveries and results assessed. unreported drill results.
* 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.
------------------------------------------------------------- --------------------------------------------------------------
Logging
* Whether core and chip samples have been geologically * This release has no reference to previously
and geotechnically logged to a level of detail to unreported drill results.
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.
------------------------------------------------------------- --------------------------------------------------------------
Sub-sampling
techniques * If core, whether cut or sawn and whether quarter, * This release has no reference to previously
and sample half or all core taken. unreported drill results.
preparation
* 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.
------------------------------------------------------------- --------------------------------------------------------------
Quality of GROUND GRAVITY GEOPHYSICAL SURVEY
assay data * The nature, quality and appropriateness of the * A ground gravity geophysical survey was undertaken
and assaying and laboratory procedures used and whether during July to September 2019, by Atlas Geophysics
laboratory the technique is considered partial or total. Pty Ltd, an independent geophysical acquisition
tests contractor.
* For geophysical tools, spectrometers, handheld XRF
instruments, etc, the parameters used in determining * The survey consisted of 3,736 new gravity stations
the analysis including instrument make and model, collected on 400x200m and 200x200m grids. This survey
reading times, calibrations factors applied and their was designed to provide regional coverage and infill
derivation, etc. over target areas.
* Nature of quality control procedures adopted (eg * Data QAQC was completed by the acquisition contractor
standards, blanks, duplicates, external laboratory and verified by an independent consultant
checks) and whether acceptable levels of accuracy (ie geophysicist using industry standard Windisp
lack of bias) and precision have been established. 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.
* This release has no reference to previously
unreported drill results, sampling, assays or
mineralisation.
------------------------------------------------------------- --------------------------------------------------------------
Verification
of sampling * The verification of significant intersections by * Data QAQC was completed by the acquisition contractor
and assaying either independent or alternative company personnel. and verified by an independent consultant
geophysicist.
* The use of twinned holes.
* This release has no reference to previously
unreported drill results, sampling, assays or
* Documentation of primary data, data entry procedures, mineralisation.
data verification, data storage (physical and
electronic) protocols.
* Discuss any adjustment to assay data.
------------------------------------------------------------- --------------------------------------------------------------
Location
of data * Accuracy and quality of surveys used to locate drill * km = kilometre; m = metre; mm = millimeter; mgal =
points holes (collar and down-hole surveys), trenches, mine milligal; nT = nanoTelsa
workings and other locations used in Mineral Resource
estimation.
* The coordinate system is GDA94 MGA Zone 51S
coordinates.
* Specification of the grid system used.
* Quality and adequacy of topographic control. GROUND GRAVITY GEOPHYSICAL SURVEY
* Lecia 1200 GNSS DGPS system was used to determine X,Y,
Z for each gravity station.
* This release has no reference to previously
unreported drill results.
------------------------------------------------------------- --------------------------------------------------------------
Data spacing GROUND GRAVITY GEOPHYSICAL SURVEY
and * Data spacing for reporting of Exploration Results. * The survey consisted of 3736 new gravity stations
distribution collected on 400x200m (400m spaced E-W lines and 200m
stations) and 200x200m grids.
* Whether the data spacing and distribution is
sufficient to establish the degree of geological and
grade continuity appropriate for the Mineral Resource * Decimation testing of ground gravity data collected
and Ore Reserve estimation procedure(s) and over Havieron (100x100m) confirmed that the maximum
classifications applied. 400x200m station spacing is appropriate to detect
mineralization style targeted.
* Whether sample compositing has been applied.
* This release has no reference to previously
unreported drill results, sampling, assays or
mineralisation.
------------------------------------------------------------- --------------------------------------------------------------
Orientation GROUND GRAVITY GEOPHYSICAL SURVEY
of data in * Whether the orientation of sampling achieves unbiased * The survey consisted of 1180 new gravity stations
relation sampling of possible structures and the extent to collected on a 400x200m grid.
to which this is known, considering the deposit type.
geological
structure * The grid geometry provides 200m along line station
* If the relationship between the drilling orientation coverage approximately perpendicular to regional
and the orientation of key mineralised structures is geological strike.
considered to have introduced a sampling bias, this
should be assessed and reported if material.
* This release has no reference to previously
unreported drill results.
------------------------------------------------------------- --------------------------------------------------------------
Sample
security * The measures taken to ensure sample security. * This release has no reference to previously
unreported drill results.
------------------------------------------------------------- --------------------------------------------------------------
Audits or GROUND GRAVITY GEOPHYSICAL SURVEY
reviews * The results of any audits or reviews of sampling * Data QAQC was completed by the acquisition contractor
techniques and data. (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 listed in the preceding section also apply to this
section.)
Criteria Explanation Commentary
Mineral
tenement * Type, reference name/number, location and ownership * The Paterson Range East Project is located wholly
and land including agreements or material issues with third within the following Exploration Licence:
tenure status parties such as joint ventures, partnerships,
overriding royalties, native title interests,
historical sites, wilderness or national park and * E45/4928 (granted)
environmental settings.
* Greatland Pty Ltd holds a 100% interest in E45/4928
* The security of the tenure held at the time of
reporting along with any known impediments to
obtaining a license to operate in the area. * Newcrest Operations Limited holds right of first
refusal as per Farm-in Agreement dated 12(th) 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 region of the Paterson Range East
parties parties. Project has involved the following companies:
* Newmont (1987-1989)
* Newcrest (1990 - 1996)
* BHP Minerals (1993 - 1995)
------------------------------------------------------------- ----------------------------------------------------------------
Geology
* Deposit type, geological setting and style of * Paterson Province Geological Setting:
mineralisation.
* Proterozoic meta-sedimentary rocks.
* Targeted Mineralisation styles include:
* Iron Oxide (IOCG) and Iron Sulphide (ISCG) copper and
gold.
* Intrusive Related and Skarn-style gold and copper.
* Orogenic (vein and reef style) gold;
* Carlin-style gold.
------------------------------------------------------------- ----------------------------------------------------------------
Drill hole
Information * A summary of all information material to the * No drilling has been completed at this stage of the
understanding of the exploration results including a exploration program.
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.
------------------------------------------------------------- ----------------------------------------------------------------
Data
aggregation * In reporting Exploration Results, weighting averaging * This release has no reference to previously
methods techniques, maximum and/or minimum grade truncations unreported drill results.
(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.
------------------------------------------------------------- ----------------------------------------------------------------
Relationship
between * These relationships are particularly important in the * This release has no reference to previously
mineralisation reporting of Exploration Results. unreported drill results.
widths and
intercept
lengths * 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').
------------------------------------------------------------- ----------------------------------------------------------------
Diagrams
* Appropriate maps and sections (with scales) and * This release has no reference to previously
tabulations of intercepts should be included for any unreported drill results.
significant discovery being reported These should
include, but not be limited to a plan view of drill
hole collar locations and appropriate sectional * Diagrams including plan maps, perspective and section
views. views are provided with this report.
------------------------------------------------------------- ----------------------------------------------------------------
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 * Incoming MMI soil geochemistry results are pending.
tests for lateral extensions or depth extensions or This data will assist further target refinement.
large-scale step-out drilling). Other planned further work potentially including
local scale electrical geophysical surveys to further
refine targets.
* Diagrams clearly highlighting the areas of possible
extensions, including the main geological
interpretations and future drilling areas, provided
this information is not commercially sensitive.
------------------------------------------------------------- ----------------------------------------------------------------
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END
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