Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

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

To: Joe Champion who wrote (1408)	4/17/1998 4:51:00 PM
From: Tim Hall	Read Replies (1) \| Respond to of 1913

Joe, The speculation on the thread is that it has taken this long to find the right standard fire assay: ie. just the right fluxes and quantities. This does not make much sense to me. There are very basic procedures for standard assays of unknown material. If gold is present it should show up, maybe not all of it. Then the assay procedure may be refined to collect all of the gold. These procedures usually involve the amount of lead added or the addition of compounds to compensate if the ore is oxide or sulfide. I would assume that all of these playa ores should be slightly oxide. If the gold is in the form of free gold, the basic assay should show all of it. Tim Hall PS I don't believe that many people understand the concept of oxide and sulfide. During ore formation, there is usually a lot of pyrite formed. This pyrite contains much of the gold in these deposits and the ore would be considered sulfide. After long periods of geologic time and exposure to water, the pyrite exchanges its sulfur for oxygen and becomes an oxide ore. Copper does the same thing. You probably know this but I am posting this for the rest of the readers. 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.