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In the historic Callawonga Creek alluvial goldfield scheelite CaWO4 and ferberite FeWO4 as disseminations shoots and masses in host quartz tourmaline pegmatoid veins was recovered from the hard rock mine of Queen Mary minor also from the mine Gaba Tepe from 1915 18
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A gold carbonaceous sulphide ore from California carrying free gold yielded a 93 per cent recovery into a concentrate at 14 4 1 to ratio of concentration after conditioning with 0 50 lb per ton of reagent 645 In each case the ore was ground to about 70 per cent
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