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05/07/20
12:42
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Originally posted by Crom Valen:
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The aircore drilling at Lake Austin is designed only to locate targets hidden under cover. Low grade results in the aircore drilling are therefore fully expected, and I imagine that MGV / EVN would be delighted that the reconnaissance drilling is not just anomlous gold and pathfinder elements but some pretty decent gold grades as well. Aircore drilling results have extended the Lake Austin North anomalism to more than 5.5 kilometres of strike, confirming the potential for a large mineralised gold system. Notable results include 6 metres at 4.2 g/t gold from 116 metres, including 1-metre at 18.2 g/t from 117 metres and 9 metres at 2.25 g/t from 136 metres to the end of hole. Managing director Rob Waugh said: “These aircore results continue to show the large scale of the gold system lying hidden under Lake Austin and support the company’s view on the prospectivity of this large area." ---------------- Aircore drilling is a reconnaissance exploration technique used to better define basement geology below the lake cover and provides a direct detection geochemical tool to define areas of gold anomalism for follow-up basement drilling at depth. The aircore technique can only effectively drill to the top of fresh rock through the lake clays and oxidised rock that is the Archaean regolith. Lowgrade aircore results can provide a geochemical indication of higher-grade mineralisation in the basement beneath, as is commonly seen in the Western Australian Yilgarn region.
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6m @ 4.2 g/t from 117m the best from how many AC holes? That's already quite deep but you say there is an even deeper bedrock with high au? Perhaps but a long shot. Deeper they drill the higher the grades and lengths of intersections are needed. 5g/t cut off for underground mining. AC results at Lake Austin are disappointing.