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Gold/Mining/Energy : Exall Resources/Glimmer Resources -- Ignore unavailable to you. Want to Upgrade?

To: James N. Wilson who wrote (760)	1/3/1999 11:33:00 PM
From: E. Charters	Read Replies (1) \| Respond to of 1319

Well I don't think they have even got to that point. Originally in their drilling they had thought that the thing was cut off at depth. It seems that Hemlo were into that old paradigm about basement rocks that geologists during the 30's used to tout. That myth has long since been laid to rest but you still get groups of geos asking whether the capacity to carry to depth is there in a particular deposit. Since 90% of the Archean deposits have no retrograde tendencies as depth increases there is no reason to believe there is any cutoff. What became apparent in Exall's drilling is that just with infill alone and ignoring the odd Hemlo low grade stepout the deposit could be expanded substantially at the shallower levels. This thinking is operative from many African deposits that seem to exhibit this tendendy. As depth increases, metamorphism does too and the copper content increases as the gold declines. Russian Archean deposits seem to bottom out at about 1500 feet. But Canadian deposits with few exceptions (and those are demostrably high in silver), seem to carry to great depths. The analog is the Indian gold deposits that were mined to 10,000 feet. I am not sure but I don't think the depth of beyond 2000 feet has even entered into their thinking. I would have to check it out but reserves, proabable and inferred figures are based on what can be found above that depth. mailto:echarter@vianet.on.ca