Annual Report, EL 2613 Finniss River, year ending 5/10/1984 to 4/10/1985.

Abstract

Exploration Licence 2613, comprising 23 blocks, is located 46 kilometres south of Darwin in the Finniss Range area. Talmina Trading Pty Ltd has been exploring the area for tin, tantalite mineralization in the pegmatite under a joint venture agreement with the licensee JW Benger. Exploration during 1984/85 consisted of costeaning, costean mapping, bulk sampling and sampling of pegmatites and alluvial/elluvial materials from all over EL 2613. The pegmatites, which have been emplaced in Burrell Creek Formation, are zoned and a large proportion contain visible mineralization. Microscopic and microbe studies of mineral concentrates has established that the ore minerology consists o tantalite-colombite, cassiterite, rutile, ilmenite, magnetite and ambliygonite. The distribution of mineralization throughout individual pegmatites is patchy. Therefore, as exploration proceeds it is planned to utilise the pilot plant currently being used for bulk testing ore from MLN 1052 to sample and test material from EL 2613.