REG - Great Western Mining - High-Grade Results from Tungsten Prospects

Great Western MiningAnnouncement

Yesterday 07:00

For best results when printing this announcement, please click on link below:
https://newsfile.refinitiv.com/getnewsfile/v1/story?guid=urn:newsml:reuters.com:20250616:nRSP8539Ma&default-theme=true

RNS Number : 8539M  Great Western Mining Corp. plc  16 June 2025

GREAT WESTERN MINING CORPORATION PLC

("Great Western" or the "Company")

 

HIGH-GRADE RESULTS FROM TUNGSTEN PROSPECTS

 

Great Western Mining Corporation PLC (AIM: GWMO) is pleased to announce assay
results from a reconnaissance sampling programme targeting tungsten
mineralisation at and around the Pine Crow and Defender tungsten workings
where it has recently expanded its acreage.  The detailed results are set out
in table 1 below.

 

HIGHLIGHTS

 

·    The previously producing Pine Crow and Defender tungsten mines lie on
Great Western's claims.  In late 2024 the Company increased its claims around
these two former mine sites.

·    Multiple selective grab samples recently taken have recorded over 1%
WO(3) (tungsten trioxide), with maximum of 1.75% WO(3).

·    The assay results significantly upgrade the tungsten potential around
and between the workings where the previous highest recorded sample was 0.33%
WO(3.)

·    The trend between Pine Crow and Defender covers 1.2 km.

·    Potential for significant upgrade between the two workings with use
of modern technology.

Given the high tungsten contents from the grab samples, the Company will now
fast-track further exploration on these claims, located approximately 45 km
from the Pilot Mountain tungsten project operated by Guardian Metal Resources,
which has a JORC-compliant resource of 12.53Mt grading 0.27% WO(3). The next
phase will entail mapping and soil sampling together with geophysical surveys,
including gravity, and trenching.

 

Spot tungsten prices (ammonium paratungstate, APT) have recently hit 12-year
highs of approximately $400/mtu, driven by Chinese restrictions on critical
mineral exports. China controls 80% of global tungsten production and 97% of
global processing capabilities.  Tungsten has now been officially declared a
critical mineral in the USA.

 

Great Western Chairman Brian Hall commented: "It is still early days, but
these initial results generated by our exploration team are extremely
encouraging and a strong case can be made for establishing a single body of
mineralisation joining Pine Crow and Defender across a 1.2 km tract.

 

"Together with our Huntoon copper porphyry setting which we will be drilling
this summer, Great Western is now working directly on two metals which are
formally on the critical list.  In the case of tungsten, we are only too
aware that globally there are very few listed companies which offer investors
exposure to this high priority defence and industrial metal, and we will be
working towards launching a drill campaign.''

 

BACKGROUND

The Defender and Pine Crow tungsten workings were identified as priority
targets based on the evidence of legacy tungsten production. Situated at each
end of a 1.2 km trend which begins approximately 2 km northeast of and on
trend with the Company's skarn copper resource at M2, part of the Company's
Huntoon Copper Project.  Recent field work has confirmed the presence of
scheelite-bearing skarns and returned very encouraging assay results which
underscore the potential for high-grade tungsten mineralisation coupling both
prospects.

 

New claims were staked in late 2024, and a field visit made in April 2025 by
company staff and consultant Dr. Lawrence Carter. The Defender and Pine Crow
mine workings and dumps were examined and selective grab samples collected.
Sampling was guided by use of a UV lamp to identify scheelite (CaWO(4)) and
powellite (CaMoO₄), both of which fluoresce under UV.

 

 

Figure 1. Left, sample fluorescing under UV lamp in field. Right, main
Defender workings, with old loading platform.

 

Assay results from this work have returned grades of up to 1.75% WO(3),
representing a substantial increase on the highest tungsten value previously
recorded from these prospects in the Company's database (0.33 % WO(3)) 1 
(#_ftn1) . These results are highly encouraging and further reinforce the
tungsten prospectivity of the district. The samples also returned anomalous
grades for a range of other metals, including silver, bismuth, copper, indium,
molybdenum, tin and zinc (Table 1).

 

The grab samples reported here are selective and not necessarily
representative of wider mineralised zones, but the mineralisation observed
strongly supports the next phase of work, including channel sampling and
geophysical surveys.

RESULTS IN DETAIL

 

Table 1. Selected elemental abundances from new rock chip samples at Defender
and Pine Crow workings. Values in bold are anomalous. Values in bold & red
are strongly anomalous.

 Sample ID   Ag (ppm)   Bi (ppm)   Cu (ppm)   In (ppm)   Mo (ppm)   Sn (ppm)   Zn (ppm)   WO(3) (%)
 LC-GWDF-01  0.09       0.37       62.1       1.68       181.5      32.5       115        0.4*
 LC-GWDF-02  3.07       1.11       2540       1.67       26.9       31.5       229        0.11†
 LC-GWDF-03  0.55       7.03       19.3       1.54       644        109.5      180        1.5*
 LC-GWDF-04  0.13       3.69       21.5       2.3        878        159        356        1.75*
 LC-GWDF-05  0.06       0.48       3.2        1.19       80.5       36.9       202        0.11†
 LC-GWDF-06  0.05       0.32       2.7        2.08       108        28.8       161        0.54*
 LC-GWDF-07  0.08       0.36       7.5        1.65       175        42.9       253        0.46*
 LC-GWDF-08  0.09       1.3        33.7       1.9        81.7       59.2       252        0.28*
 LC-GWPC-01  0.23       35.1       15         7.72       729        196.5      175        1.2*
 LC-GWPC-02  0.06       0.3        5.7        1.85       3.52       0.9        6          0.005†
 LC-GWPC-03  1.07       33.1       417        0.01       229        21.1       365        0.36*
 LC-GWPC-04  6.55       15.5       756        0.56       24.1       21.3       160        0.04†
 LC-GWPC-05  4.46       0.51       12.8       1.16       31.5       2.8        1070       0.01†
 * WO(3) analysis via XRF
 † W analysis via ICP-MS, converted to WO(3) via stoichiometric calculation,
 see notes under 'Additional Information'.

 Previous sampling by the Company at these prospects returned best grades of
 0.33% WO(3) (Pine Crow)(1) and 0.20% WO(3) (Defender)(1). These new results,
 which were better targeted through in-field use of a UV lamp and the use of a
 more favourable analytical technique for high grade tungsten at the laboratory
 (see notes below), represent significant upgrades to both the exploration
 methodology and prospectivity, highlighting the polymetallic potential at
 these prospects.

Figure 2. Map showing northern end of GWM's Black Mountains claim group, with
 new grab samples from Pine Crow and Defender workings indicated.

 

ADDITIONAL INFORMATION

All samples were initially analysed for a broad suite of elements using ICP-MS
following a four-acid digestion at ALS laboratories in Reno. Where tungsten
values exceeded 1,500 ppm W, corresponding samples were subsequently
re-analysed by X-ray fluorescence (XRF) using fused-bead preparation, which
reports results as WO(3) (tungsten trioxide) rather than W (elemental
tungsten). All results from ICP-MS analyses have been converted from ppm W to
% WO₃ using a standard stoichiometric factor (0.0001261) to facilitate
comparison. XRF results consistently returned higher WO₃ values than those
calculated from ICP-MS results for the same samples, which may reflect more
complete recovery of refractory tungsten phases during fusion.  Readers are
advised to treat this conversion as indicative only. Standard QC procedures
were followed.

 

QUALIFIED PERSON STATEMENT

The information in this announcement that relates to exploration results is
based on information reviewed by Dr James Blight MGeol PhD MAusIMM who is
Chief Geologist of Great Western Mining Corporation PLC. Dr Blight is a
"Qualified Person" as defined in the "Note for Mining and Oil & Gas
Companies" which form part of the AIM Rules for Companies. Dr Blight has
reviewed and consented to the inclusion in the announcement of the information
in the form and context in which it appears.

 

For further information:

 

 Great Western Mining Corporation PLC
 Brian Hall, Chairman                                              +44 207 933 8780
 Max Williams, Finance Director                                    +44 207 933 8780

 Davy (NOMAD, Euronext Growth Listing Sponsor & Joint Broker)

 Brian Garrahy                                                     +353 1 679 6363

 SP Angel Corporate Finance LLP (Joint Broker)

 Ewan Leggat/Devik Mehta                                           +44 203 470 0470

 Shard Capital Partners

 Andrew Gutmann/Erik Woolgar                                       +44 207 186 9008

 Walbrook PR (PR advisers)

 Nick Rome/Joseph Walker                                           +44 207 933 8783

 

 

Notes to Editors

The Company has a large tract of acreage in Mineral County, Nevada. The area
consists of rugged, mountainous terrain, which means that large parts of it
remain under-explored. Mineral potential is hosted by the regional Walker Lane
Structural Belt, the largest structural and metallogenic belt in Nevada, yet
one of the least explored in recent times, with gold, silver and copper
currently produced in Mineral County.  Great Western has seven distinct
concession areas which offer the potential for exploiting (1) short term gold
and silver deposits and (2) long-term, world-class copper deposits.

 

Six of the Company's properties are in the west of Mineral County and the
seventh and most recent acquisition, the Olympic Gold Project, is in the east
of the county, some 50 miles from the main group.  All the Company's claims
are 100% owned. Claims at the Eastside Mine Group have been contributed to a
pooling agreement with Bronco Creek Exploration, Inc. and in addition the
Company participates in the Huntoon Mine Area Cooperation Agreement with
landowner-neighbour Crowne Point Resources with whom it shares resources.
Great Western's small exploration team is supported by locally based
consultants and contractors.

The state of Nevada is one of the world's most mining friendly
jurisdictions.  While tightly regulated and environmentally conscious, Nevada
welcomes the mining industry.  Great Western takes care to ensure that its
claims are maintained in good standing and all regulations observed.

 

There are numerous gold and silver prospects on the Company's acreage,
including extensive historic mine workings which offer the opportunity for
secondary recovery. The Company is party to a 50-50 joint venture known as
Western Milling LLC which is constructing a mill to process pre-mined material
for secondary recovery of gold and silver.

 

Furthermore, through extensive drilling over a five-year period, GWM has
established a Mineral Resource on its first target area known as M2, of 4.3
million tonnes at 0.45% copper, for 19,000 tonnes of contained copper metal.
This resource has been independently reported in accordance with JORC
guidelines.

 

GWM has also established an Inferred Resource Estimate of 31,000 tonnes
grading 1.6 g/t gold and 3.0 g/t silver in tailings associated with the OMCO
Mine at the Olympic Gold Project.  Additionally, exploration targets have
been independently reported as follows:

 

·    3,400 - 6,400 tonnes grading between 0.5 and 1.2 g/t Au and 1.2 and
2.1 g/t Ag in the substrate beneath the tailings volume at the Olympic Mine.

·    9,000 - 12,000 tonnes grading between 0.9 and 2.4 g/t Au and 2.0 and
5.1 g/t Ag in a coarse stockpile at Olympic Mine.

·    4,200 - 7,700 tonnes grading between 40 and 140 g/t Ag and 0.3 and
0.3 g/t Au in spoil heaps at Mineral Jackpot.

 

 

(#_ftnref1)

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 (mailto:rns@lseg.com)
 or visit
www.rns.com (http://www.rns.com/)
.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our
Privacy Policy (https://www.lseg.com/privacy-and-cookie-policy)
.   END  DRLPKNBBPBKDDAD