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Gold/Mining/Energy : Precious and Base Metal Investing -- Ignore unavailable to you. Want to Upgrade?


To: marynell who wrote (2371)3/12/2002 11:57:03 PM
From: Elizabeth Andrews  Read Replies (1) | Respond to of 39344
 
The likely metallurgy of most VMS and magmatic deposits can be (mainly) surmised by the fabric and texture of the rock. Coarse fabric and texture are good. You can eyeball this after a few samples are assayed. Faralon mineralization is generally a very fine grained sulfide within a somewhat coarser matrix. The economic copper and zinc minerals which are part of the sulfide hydrothermal juice are very, very fine grained which means a lot of grinding for liberation. Finer than the pyrite. This can also mean a complex mill circuit. Some of the gold is encapsulated by the pyrite and it cannot be efficiently liberated without (likely) pressure oxidization. Expensive. The Farallon deposits are also small.

Some of Yukon's VMS and Kuroko type deposits had surprises as bad stuff was within the sulfides that could not have been anticipated as the mineralization was fairly coarse to the eye, meaning that the concentrate produced would suffer smelter penalties rendering the project's NSR uneconomic at today's prices. Selenium is difficult to eyeball in core.

I have no problem with the MAN geology and I'm actually long the stock at this time. The MAN deposits are large and, politics aside, should become mines. It's politics. I was short MAN during the town issue as my posts indicated. Made enough to go to the Big Island for a week to get wrinkled up a bit. The politics may have changed in favor of development. We'll see.