Great Western Mining Corporation PLC announced the discovery of a substantial area of anomalous gold in soil samples at its M5 prospect in the Jack Springs claims group in Mineral County, Nevada. The M5 prospect in the southeastern part of the Jack Springs claims group has previously been identified by the Company. It is a mafic intrusion in limestones and rhyolites, mineralisation being associated with veins within the alteration zone around the intrusion, and forms a prominent northeast trending ridge, standing proud of the surrounding tertiary lavas. Following the success of the first soil sampling grid at M5, reported on 10 July 2023, a follow up programme has now been completed, comprising 298 new soil samples collected at 30 m spacing along 50 m spaced lines.

Of these samples, 158 graded above 10 ppb Au, 58 graded above 25 ppb Au and 11 graded above 50 ppb Au. There were three outliers over 100 ppb Au, including 246, 145, and 130 ppb Au. There is a particular cluster of higher-grade samples in the eastern window which is an area never previously visited or sampled.

The programme has now identified a zone 1500 m long by 400 m wide containing several corridors of anomalous gold which is open as it reaches the edge of surrounding overlying tertiary lavas. Two disconnected areas of sampling, taken over small window zones in the tertiary cover, are also broadly anomalous, suggesting a more widespread sub-cropping zone. It is likely that the anomalous gold continues beneath the tertiary lavas and is not limited to the sampled zone.

Both copper and silver are also anomalous at M5, with a similar distribution to gold. Grab sample results: Ten new selective grab samples were taken at M5 during the follow up soil sampling. These samples were taken from outcrops that were mineralised in appearance or otherwise of interest to the sampling geologist. One stand-out sample, taken from a small working which features a copper oxide bearing quartz vein (sampled once previously - see 10 July 2023 news release) returned 5.14 g/t Au, 1,246 g/t Ag and 0.32% Cu.

This indicates that strongly mineralised structures occur at M5 and are a likely source of the soil anomalies. Two other samples with notably high-grade copper (5.16 % and 1.09 % Cu) occurred on the southeast facing flank of the ridge line. These samples feature sulphide stringers with chalcopyrite and abundant copper oxides.

 Remote sensing interpretation: Interpretation of ASTER multispectral satellite imagery shows a distinctive alteration signature over the M5 hill, which also occurs at the two windows through the tertiary cover referred to above, and at a third, as yet unsampled window 400 m farther to the northeast. The imagery also indicates that a larger area, the centre of which is around 1.8 km to the northeast of the M5 ridgeline, may too be prospective.  Further soil sampling together with an IP survey is planned for 2024. All soil samples were submitted to Paragon Geochemical Laboratories, Reno, Nevada.

Samples were screened to -80 mesh and analysed by method FSAU-25, aqua regia digest with ICP-MS finish for a 51-element suite. Quality control samples were inserted by the company and results reviewed prior to release. Grab samples were prepped and analysed at Bureau Veritas in Reno, Nevada, by methods FA430 (fire assay) for gold and AQ300 aqua regia digest with ICP-ES finish for a 33-element suite.