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Gold/Mining/Energy : GITENNES Exploration (ase:GIT) -- Ignore unavailable to you. Want to Upgrade?

To: charred who wrote (925)	12/15/1997 2:27:00 PM
From: E. Charters	Respond to of 1092

Read the git summary again. timmins.vianet.on.ca The Quebrada Alumbre volcanics are tertiary Calipuy volcanic breccia. The question of where they are in age is answered by this really. Here type is more important than pinpointing age. Age can be a trap and it is difficult to age intrusions. We know they are younger than Cretaceous but how much? How do you decide how "low" in the porphyry system Gitennes is? Does it matter. It's gold and copper that you are looking for not old or young gold and old copper? I agree that the property would not be epithermal as it is too close to the felsic sources. Epithermal deposits are just a buzzword. What they mean is indirect hydrothermal hotspring. These are not that type and neither are many of the large Manto type deposits. The Homestake however is epithermal. Goldstrike is epithermal. Interestingly their type is not currently explored for in Nevada! That is because their genesis of top down precipitation is poorly understood. Most geologist run when they see mesothermal or evidence of shallow precipitation cut offs. No specific thermal regime will actually regulate the ultimate size of the deposit. Perhaps the depth but that is not the only dimension that can contribute to size. Most Canadian deposits are hypothermal. ACTUALLY, epithermal deposits with a few important expeptions are smaller than the higher temperature ones. So looking for epithermal deposits statistically is a poorer not a better chance of finding a monster. And South America is not known for large gold deposits until recently. What is needed is the volcanic or subvolcanic association. I think Texas has the same type of deposits but American geologists are not hip to it yet, although the Espanol knew something about 300 years ago as most of these "new" areas have colonial adits in them. Diamonds could be found in Lamproites in Northern Peru and Ecuador. Better in the Guyanan shield I think though. Wanted to get down there for 15 years. There is a relation of some manto deposits to the Roxby-Downs type. They are both intrusion hydro brecciated with iron and silica-poor. echarter@vianet.on.ca