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

To: Aurum who wrote (1448)	5/25/1998 8:55:00 PM
From: go4it	Read Replies (1) \| Respond to of 1913

Aurum, If the assayer was unaware of a high concentration of Iridium was in the sample to be tested and did not compensate for it, would this prevent the gold from being assayed ? Are the chemical properties of Au and Ir similar enough in the chemistry of a FA where a high concentration of Ir would essentially use the chemicals needed for assaying the Au if it were not properly compensated for? On my visit to the mine site I was referred to a book on FA that specifically states that Ir will interfere with fire assaying. I have ordered the book but probably will not receive it for a few weeks. I hope my questions are clear.

To: Aurum who wrote (1448)	5/25/1998 11:47:00 PM
From: Tim Hall	Read Replies (1) \| Respond to of 1913

Aurum, One of the biggest myths I see perpetuated, especially by some investment letter writers, S&T, is that the gold heap leaching industry went through the same problems as the DD's are going through. Copper and Uranium were successfully heap leached back in the 60's. The problems had nothing to do with chemistry or unassayable values, they had to do with the mechanics of building the dumps so that they could maintain permeability. I think if anyone did some real research, they would find that heap leaching of gold had more to do with the gov. allowing the price of gold to change from $35/oz to following the international price. It was after that time that heap leaching of gold became profitable. Even today it would be real hard to leach gold at $35/oz. Tim Hall