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Gold/Mining/Energy : Donner Minerals (DML.V) -- Ignore unavailable to you. Want to Upgrade?

To: Feline who wrote (2348)	12/14/1997 1:29:00 AM
From: Terry J. Crebs	Respond to of 11676

Not really, but regionally SVB may be a bit more chopped-up as the Harp Lake Complex is a bit older than the Nain Complex (about 1450 Ma vs. 1305 Ma according to our good SA-buddy Lewis Ashwal). Since 1995, I've attributed many of the structures at VB to be due to "wrench tectonics"--looks to me like a mid-Proterozoic equivalent to the Rhine graben--as the Nain Plate over-thrusted the Churchill (about 1800 Ma), which set up the Abloviak Shear Zone (with sythetic and antithetic strike-slips) AND the EW-trending normal-faults which appear to control the emplacement of ALL the VB orebodies. (I published this last year if you wish to peruse musty old GP journals. BTW, few INCO geowizards agreed with me, but they are starting to come around I think with the latest discoveries--sorry Fair Feline, but I really cannot "fess-up everything" .) I think the reason for the little or no volcanics is the extrusives have been eroded away. As you well know anorthosite complexes with their troctolitic-ferro-dioritic-and granitic members are thought to be mid-crustal mafic intrusions--and the depth-of-emplacement for the Nain is thought to be between 6 and 10 kilometers. Yup, lotsa erosion in 1.3 billion years uncovered our Ovoid and the gossan; ain't Mother Nature grand . (BTW, I never key on the greenstones, but the VMS and gold dudes/dudettes always do.) I really haven't worked at all on the Harp Lake Complex--Ryan writes that it had been pretty well picked over by Falco, Kennecott, and many others in the 1950-thru-80's mainly for PGM's. I really don't know much about how SVB is similar or disimilar to VB regionally. Maybe I'll just pull out my old Labrador GP maps and take another look. I'm speculating that SVB grades may improve westward towards the Churchill para-gneisses (FYI, I think that's why the Ovoid and Western Extension had better grades than Eastern Deeps.) SVB drilling in'98 may get even more interesting if I'm right--kinda wish these SVB boys and girls would show all their borehole locations. Best Regards, T. P.S. Hey, You still buying martini's? Here's hoping your US$ prediction has some validity. BTW, have you been whispering to Bob Samuelson at Newsweek?? You may wish to browse his 15-Dec, page 44 tome--he sounded somewhat like you to me.