Infinity Mining has enlarged its lithium footprint at three Tambourah South prospects in Western Australia’s East Pilbara region by discovering more pegmatites through field mapping and confirming lithium prolificacy by rock-chip and drill-sampling assays.
The company says rock chips recorded a best value of 3.7 per cent lithium oxide and eight reverse-circulation (RC) holes cut 23 pegmatites with a maximum thickness of 25m.
The geological setting for Infinity’s lithium-caesium-tantalum (LCT) and rare earths pegmatites, where 32 stacked units in up to a 558m strike length have been mapped, is similar to the nearby producing world-class lithium-tantalum mines at Pilgangoora, spodumene at Wodgina and the lithium-tantalum Archer deposit in the tier-one mining jurisdiction.
Infinity Mining chief executive officer Joe Groot said: “Infinity continues to advance all 3 Lithium prospects at Tambourah South, showing it is a very fertile Lithium system that is under-explored. The ongoing 3D geological interpretation incorporating the results from the recent Ambient Noise Tomography (ANT) survey, plus results from and these recent drillholes will enable the Company to identify other prospective concealed pegmatite targets, to be followed up in future exploration.”
The company’s McNeill prospect, the most northerly of the three pegmatite prospects that contains a swarm of newly-mapped pegmatites, had six rock-chip samples fast-tracked for analysis and they returned lithium oxides values ranging from 1.9 per cent to 3.7 per cent. One chip returned 565 parts per million caesium, 230ppm niobium, 1790ppm rubidium and 307ppm tantalum. Another 107 rock chip samples are queued for assessment.
Infinity’s second phase of RC drilling, comprising eight holes for 834m, intersected pegmatites in every hole, with widths ranging from 1m to 25m. The samples are now being fast-tracked for analysis.
The company says the promising results have proven the fecundity of Tambourah South area for lithium and rare earths, an outcome first envisaged in its maiden RC drilling scout program last April. The 21-hole program across 1812m tested three target areas that had been mapped and surface-sampled, with pegmatites testing up to 2.636 per cent lithium oxide.
A total of 41 individual pegmatite units were logged in 18 drillholes, with thicknesses ranging from 1m to 35m. The 1m drill samples returned a peak result of 0.994 per cent lithium oxide.
Infinity continues to impress as it reveals more ground rich in lithium-rare earths-laden pegmatites. And the pending assay results could well be worth the wait.
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By Gary Kjellgren
