Annual report EL 2252 Marrakai for year ending December 1982.

Abstract

During the year mapping and surveying was carried out to determine the route for an all-weather road into the EL areas. Due to the difficult and inconsistent terrain it was found necessary to use a helicopter to help survey and determine this route. The road was then constructed using the company's D7 Bulldozer.

Due to the lack of permanent water in the area it was necessary to construct a road, and transport a mobile concentrator unit into the area during the wet season. The plant was set up on the nearby Marrakai Creek and twenty five, 5 tonne bulk samples of alluvial material were collected from the lease area, and trucked to the Marrakai Creek for processing. The grade estimates varied between 0.1 and 1.5 gm Au per tonne and these results were regarded as significant by the directors. The gold in the lease area appears to be restricted to the b.i.f. units of the Kapalga Formation, and in associated alluvials. Goulevitch (1979) and Nicholson (1979) proposed a syngenetic model for the genesis of sulphides, and the gold deposits associated with b.i.f, within the Kapalga and Koolpin Formations. This model may well apply to the Mt Bundey area and the proposed programme for 1983 of detailed mapping, sampling and drilling will adequately test the b.i.f. within the Kapalga Formation for gold ,mineralisation.