Lithium Australia NL (ASX:LIT) announced that assay results from maiden rock-chip sampling and mapping have confirmed the presence of high grade lithium pegmatites at the Company’s 100% owned Ravensthorpe project, west of Esperance in southern Western Australia.
As quoted in the press release:
HIGHLIGHTS:
- Maiden results confirm of presence of at least 7 lithium pegmatites within the Ravensthorpe project area and immediate surrounds, west of Esperance
- Early indications that the grade and scale of lithium mineralisation is of economic significance and warrants follow-up investigation
- Assay results from 19 samples of lithium mineralisation from the lithium core-zones of all pegmatites range from 1.26% Li2O to 4.23% Li2O, with a mean of 2.96% Li2O
- Likely additional lithium pegmatites in project’s unexplored areas
- Large core zones containing the lithium minerals lepidolite and zinnwaldite have been mapped at the Quarry Pegmatite and Horseshoe Pegmatites and have a combined strike length exceeding 750m
The recently completed fieldwork focussed upon detailed examination of known lithium pegmatites. The pegmatites and their surrounds were mapped at 1:2,500 scale, delineating zones of lithium mineralisation, and lithium mineralisation was sampled. In addition, a preliminary investigation of surrounding areas was completed.
The project contains a mix of simple, barren quartz-feldspar muscovite pegmatites, zoned barren quartz-feldspar-muscovite-schorl pegmatites and zoned lithium pegmatites. The lithium pegmatites contain the lithium mica minerals lepidolite and zinnwaldite, as massive pods and disseminations within quartz-lepidolite core-zones. These core zones are able to be mapped by the distinctive appearance of outcrops.
The assay results confirm that the pink, purple, lilac or grey micas are significantly lithium enriched. Samples R001, R002 and R007 to R020 are lepidolite while R003, R004 and R021 are zinnwaldite. No other lithium minerals were observed and the pegmatites are interpreted as zoned Lithium, Caesium, Tantalum (“LCT”) Complex pegmatites of the Lepidolite subclass.
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