Andrada Mining, the AIM and OTCQB-listed tin producer with a portfolio of critical mineral assets in Namibia, has extended the surface mineralisation of its Lithium Ridge project by 50% to nine kilometres.
The final grab sample results also identified high-grade lithium, tin and tantalum anomalies across multiple new pegmatites beyond the primary trend.
Multiple grab samples returned lithium oxide grades above 3.5%, with tin grades up to 7.38% and tantalum up to 3,192 parts per million.
The sampling forms part of Stage 1 of an earn-in agreement with Sociedad Química y Minera de Chile, through its subsidiary SQM Australia.
Andrada collected 1,230 grab samples from roughly 1,500 outcropping pegmatites identified through satellite and aerial imagery, with results for the final 734 samples disclosed in this update following an initial batch reported on 26 January.
Of the new samples, 60 returned lithium oxide grades above 1%, including 48 above 2%, spread across multiple pegmatites.
"These results extend the identified mineralised trend by an additional three kilometres and confirm high-grade lithium mineralisation across multiple new pegmatites, together with significant associated tin and tantalum mineralisation," said chief executive Anthony Viljoen.
The Stage 1 drill programme, roughly 16,500 metres of oriented diamond drilling, completed in May.
Samples from that drilling are now being dispatched for analysis, with Andrada set to report results as they arrive.
