お知らせ • Jun 22
Geo Exploration Limited Reports Positive Initial Field Findings At Gorge Project in Western Australia
Geo Exploration Limited has reported significant progress at the Gorge Project in Western Australia, based on the initial findings from its field reconnaissance programme. The programme has confirmed several encouraging field indicators across the three prospects: Gorge Mine Prospect, 401 Prospect and Central Zone Prospect. These include visible gold in quartz vein samples, extensive historic hard-rock workings, copper-rich gossan material and geological features considered favourable for gold mineralisation. The work programme on site included geological mapping, validation of historical exploration results, confirmation of historic workings and drill locations, rock chip and grab sampling, and completion of an orientation soil geochemical survey over areas of known gold mineralisation. During the site visit geological reconnaissance was completed across the three prospects. Hard rock workings consisting of vertical shafts and costeans, were identified and mapped. In total, 35 rock chip samples were collected and included validating historical samples that have returned up to 134 g/t gold. The project area is well exposed, with only limited alluvial cover observed in drainage areas. This provides favourable conditions for soil geochemistry to be used as an effective targeting tool across the Gorge Project. Field mapping also confirmed further favourable geological features across the project, including alteration, folding, faulting, quartz veining and structural complexity. Structural measurements collected during the programme will be integrated with the Company's recently completed airborne geophysical surveys to help identify potential controls on mineralisation and refine priority targets for follow-up work. During the field programme, GEO's team observed quartz vein samples containing visible gold from areas associated with the Gorge Mine Prospect, 401 Prospect and Central Zone Prospect. In several samples, coarse gold was observed within the quartz vein samples from areas of known historic activity. The quartz vein samples came from metal detecting mullock heaps adjacent to vertical shafts. Samples were provided by independent prospectors on site and were not collected under GEO's standard sampling procedures. Accordingly, they could not be treated in the laboratory for assay results. However, the Company considers the observations to be significant to the Company as they indicate the outstanding potential prospectivity of the Gorge Project. The Company considers the observations to be very positive, particularly as the visible gold is associated with quartz vein samples from areas of known historic workings. GEO intends to undertake controlled follow-up sampling of selected mullock heaps adjacent to historic hard-rock shafts, with samples to be submitted for laboratory analysis to confirm the grade and tenor of the previously mined material. The Gorge Mine Prospect is considered the highest priority target area for follow-up work. During the field programme, five open vertical shafts were identified across the eastern and western parts of the Gorge Mine area. The shafts are typically approximately 2 metres by 2 metres and remain open to estimated depths of at least 20 to 30 metres. No modern exploration or drill testing has been recorded at the Gorge Mine target area. Historic records at the Gorge Mine refer to bedrock mineralisation at Gorge West extending for more than 1km in strike length, with extracted ore reportedly returning 14 oz/t Au, equivalent to more than 450 g/t Au. Historic records also refer to 12 tonnes of ore being extracted and processed from the Gorge Mine area, yielding lead, silver and gold from a 1.8-metre-wide quartz vein containing galena and cerussite. During the reconnaissance programme, GEO observed altered quartz vein samples around the historic shafts and mullock heaps, with grab and rock chip samples collected. The field work also identified multiple quartz vein orientations around the shafts, which is important as it may help GEO better understand how gold mineralisation is controlled at Gorge. Visible gold was also observed in the quartz vein samples which were understood to have been collected from historic mullock heaps adjacent to vertical shafts from both the eastern and western shafts in the Gorge Mine Prospect area. The Company considers the observations to be highly significant and intends to undertake controlled follow-up sampling for laboratory analysis. The observations at Gorge Mine are considered very notable given the presence of historic underground workings, multiple quartz vein orientations, sulphide and iron-oxide alteration, and exceptional visible gold observations. The recent field observations, in addition to historic records, reinforce the Company's view that Gorge Mine Prospect is a high-priority target for systematic follow-up work. At the 401 Prospect, GEO's field team confirmed the locations of historical diamond and RAB drill holes. Historical drilling at the 401 Prospect includes reported peak assays of up to 35 g/t Au from drillhole RABP005. These historical results will be reviewed alongside GEO's new field observations and sampling results. This validation is important as it will allow historic results to be more accurately reviewed and incorporated into the Company's geological model. Historic records for the 401 Prospect also refer to bedrock mineralisation extending for approximately 200 metres, with extracted ore reportedly returning 160 oz/t Au, equivalent to more than 5,000 g/t Au. Geological mapping at the 401 Prospect identified significant quartz veining, including east-west trending veins up to 5 metres in true thickness. Importantly, altered rock was also observed around the veining, including pyrite alteration in the surrounding wall rock. Samples were collected from both the quartz vein and the altered host rock so that GEO can better assess the scale, grade and controls of mineralisation in this area. Visible gold was observed in quartz vein samples understood to have been collected from the 401 Prospect area proximal to a historical costean by the independent prospectors. GEO intends to undertake controlled follow-up sampling to confirm the nature and tenor of mineralisation in this area. At the Central Zone Prospect, mapping identified a copper-rich gossan that had been historically worked. The gossan occurs at a stratigraphic contact between metasiltstone and metasandstone units and includes visible copper mineralisation, including malachite and lesser azurite. Grab and rock chip samples of the copper-rich gossanous material and nearby quartz veins were collected.