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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 (1430)	5/18/1998 2:32:00 PM
From: go4it	Respond to of 1913

Tim, I believe that the material can still be fire assayed and I also believe that they will attempt to run the COC again but don't quote me on that. The problem was that they did not expect that kind of Ir to be present in the sample and thus did not account for it. Now that they know about the Ir, they should be able to compensate for its presence.

To: Tim Hall who wrote (1430)	5/18/1998 2:45:00 PM
From: knight	Read Replies (1) \| Respond to of 1913

Tim, thanks for your help, much appreciated.(EOM)

To: Tim Hall who wrote (1430)	5/23/1998 10:07:00 AM
From: Aurum	Read Replies (2) \| Respond to of 1913

I haven't read all the relevant posts, but, one simple exercise would be to ask about the final "bead" obtained after cupelling. If there is no "bead", there is no gold+PGM content. Sure, separating them is involved, but there are instrumental techniques available now that can do this almost routinely (such as ICP-ES or ICP-MS). The "bead" should contain all the gold and at least some (usually all) of the PGMs, iridium included. Some PGMs are almost insoluble in molten gold (ie. don't significantly alloy) and will form a scum on the gold bead.