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Gold/Mining/Energy : Medinah Mining Inc. (MDHM) -- Ignore unavailable to you. Want to Upgrade?

To: RMF who wrote (8585)	1/25/1999 8:28:00 PM
From: Mike Gold	Read Replies (3) \| Respond to of 25548

Today's Geology Lesson: Supergene enrichment zones(blankets) In some porphyry systems-ore material found above prophyry systems is leached out by oxygen attacking the mineral above the water table. The dissolved mineral such as copper or gold flows down to the groundwater interface where it recrystallizes as new minerals in an area called a supergene enrichment blanket above the minerlized porphyry. Typically you may found very high levels of minerlization in these supergene zones.(Mining companies love them!) It really depends on how much water perculates down from above and what minerals are present in the rock it is flowing through and for how long. Keep in mind that 95% of the water in a porphyry system originated from above-only 5% came from the magma reservoir. Only a few of the porphyrys in Chile have them-too dry-eroded away-etc. Now wouldn't it be nice if our Lipangue mountain had a nice one! Hmmmm. Let's see-Liapangue is not too dry-probably even wetter in the past-not to high in the Andes, not eroded away, been there a long, long time, and the locals of been mining surface gold for hundreds of years! I sure wonder what kind of enrichment blanket Lipangue has!