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Gold/Mining/Energy : Desert Dirts, Gold & Platinum, the emperors new clothes -- Ignore unavailable to you. Want to Upgrade?

To: Tim Hall who wrote (1409)	4/17/1998 5:08:00 PM
From: Joe Champion	Read Replies (1) \| Respond to of 1913

Tim, You stated: >>The big question that remains, and I have never seen addressed is: what is the form of the gold in these DD's, free, oxide, sulfide or other. I doubt it would be sulfide because it has been exposed to water and weathering.<< I would have to assume "free" since it is extremely difficult to form the oxide in nature. I agree if there were any sulfides they would decompose. Furthermore, none of the DD's have reported the presence of tellurium, so one can eliminate telluride's. Assuming "free native gold" then one has limited models for extractive assays. 1) Fire assay -- which I concur with you is straightforward. 2) Liquid extraction -- this can be divided into two categories: Mineral acids, e.g. aqua regia; and/or organic extraction, e.g. cyanide compounds This leaves little left to the imagination. Joe Champion