An area of 100 square km, located 45 km west of Kingscote, was taken to enable follow-up exploration of some anomalous stream sediment geochemical sample values in lead (to a maximum 3200 ppm Pb) previously discovered by Elcor (Australia) Pty Ltd,...
An area of 100 square km, located 45 km west of Kingscote, was taken to enable follow-up exploration of some anomalous stream sediment geochemical sample values in lead (to a maximum 3200 ppm Pb) previously discovered by Elcor (Australia) Pty Ltd, but not further pursued. Initially, reconnaissance soil sampling (41 samples) confirmed the presence of soil sample anomalies in areas drained by northward-flowing streams in which the former stream sediment samples had been obtained. Next, systematic soil sampling (233 samples) was completed on a 100 m x 100 m grid covering an area of 2800 by 800 m. Analysis of these samples indicated a large arcuate soil anomaly of lead and zinc. However, further infill soil sampling at 20 m and 10 m spacings (411 samples), done along northerly traverses cutting across the general trend of the anomaly, broke up this anomaly into a number of spot highs and elevated lobes which were deemed unsatisfactory for defining drilling targets. To try a different approach, 25 lines of IP and resistivity measurements were acquired over the most discrete geochemical anomalies, and a plausible single drill target was identified on Line 4400E. In all, three main zones plus another weak, possible zone of IP chargeability were identified, and it was planned to dig costeans at these to investigate if the sources are shallowly buried. Earlier, some IP response determinations performed on six surface rock samples had shown that the expected sources of any IP anomalies would probably comprise pyrite, perhaps graphite, and galena, but not sphalerite.
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