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AGSO Research Newsletter 24 (May 1996); pp17-19
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The precious-metals potential of the Rockley Volcanics in the Lachlan Fold Belt
David A. Wallace
Earlier reports (Wyborn 1988: BMR Research Newsletter 8, 13-14; Wyborn 1990: BMR Research Newsletter 13, 8) highlighted the precious-metal potential of Ordovician shoshonitic magmas in the central Lachlan Fold Belt (Fig. 15). Intrusive complexes and volcanics derived from these magmas host important Cu-Au deposits in the Parkes-Narromine and Orange-Wellington belts, and the Fifield-Nyngan belt contains Alaskan-type mafic-ultramafic intrusions enriched in platinum. These areas are currently the main focus of exploration activity. Following joint AGSO-Geological Survey of New South Wales geological mapping of the Bathurst 1:250 000 Sheet area as part of the National Geoscience Mapping Accord (NGMA; Stuart-Smith & Wallace 1994: Oberon 1:100 000 Sheet, 8830, preliminary-edition geological map, AGSO), a geochemical study of the Rockley Volcanics in the Oberon Sheet area was undertaken. Platinum-group-element (PGE) and Au data from this study form part of this report.
AGSO Research Newsletter 24 (May 1996)
pp17-19
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