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Gold/Mining/Energy : Trump's 12 Diamond Picks, Discussions Limited -- Ignore unavailable to you. Want to Upgrade?

To: George J. Tromp who wrote (1709)	11/29/1998 8:14:00 PM
From: Chas.	Read Replies (1) \| Respond to of 2251

Tomato, Walt, George.......thanks amillion for the superb info from the Geoscience Forum and the SF Gold show...you guys have done a fantastic service for those like myself that can't attend those faraway places......my hat is off and I salute you......thanks again...chuck

To: George J. Tromp who wrote (1709)	11/30/1998 4:32:00 AM
From: E. Charters	Read Replies (2) \| Respond to of 2251

I think there may be one heapin' helpin' more than 450 kimberlites in Canada actually. With another geologist we documented or researched documentation on 3800 kimberlites in North America. Many were found from the 30's on. Some where located a century ago. In Wyoming a relatively large percentage of the rock land mass is lamproite, a diamond bearing cousin of kimberlite. Blind Kimberlites that do not berak through the crust are not uncommon in Northern Ontario where Monopros and Lac drill holes had to penetrate up to 150 feet of sandstone to get to the diatreme. How the sandstone could overlay the diatreme I am not sure but in very late depositions I guess its possible. There are many proterozoic kimberlites that will remain unfound as they are overlain by Cambrian and later sediment. The Premier is one such old pipe in Africa and it is 1 billion years old, right next to pipes only 60 million years old. I estimate the Arctic Islands have about 2500 Kimblerites visible from the air coming right to surface. I know someone who used to do spotting there for a couple of seasons. About 40% of kimberlites in the NWT come right to surface and are not covered by water or sediment of any kind. Many where sampled by people I know from 1948 on. The NWT dicsoveries are not new. If one wants to use this info and technique, it is available. EC<:-}