Possible Century or Neves-Corvo style stratabound and barite - associated, thinly bedded lead-zinc-copper sulphide/sulphate mineralisation existing in Late Precambrian to Lower Palaeozoic marine sediments of the Adelaide Geosyncline, was the...
Possible Century or Neves-Corvo style stratabound and barite - associated, thinly bedded lead-zinc-copper sulphide/sulphate mineralisation existing in Late Precambrian to Lower Palaeozoic marine sediments of the Adelaide Geosyncline, was the target of exploration in the Ediacara area, 40 km south-west of Leigh Creek. Rock chip sampling of outcrop returned mildly anomalous base metal values, while a review of available geophysical data indicated several untested minor positive gravity and magnetic anomalies. Small infill gravity surveys on selected anomalies were followed by diamond drilling (two holes, NE1 and NE3, aggregating 510 m of percussion pre-collaring, plus 810.2 m of diamond coring) and one percussion hole (NE2), abandoned at 188 m depth. No significant mineralisation was encountered beneath the known uneconomic surficial vein deposits, although several characteristics of the interpretive primary ore formation model were shown to be present.
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