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Gold/Mining/Energy : Canadian Diamond Play Cafi -- Ignore unavailable to you. Want to Upgrade?

To: Diamond Daze who wrote (539)	1/27/2003 6:22:10 PM
From: E. Charters	Read Replies (1) \| Respond to of 16206

It was outcrop that looked like ultramafic rock to him. He has taken a prospector's course and the investigation he did told him to look at all likely ultramafic outcrop for diamonds. It was good advice. The rock would not have been tested by most experts as it was a lamprophyre. They are diamondiferous and the so called dykes are actually not dykes but hypabysall and diatreme facies fissure-veins or semi-blows. The are far too wide to be called kimerblite dykes. The widest kimberlite dyke yet found in the world is only 3 feet wide. A fissure vein on the other hand is an entirely different animal and they routinely go to 15 feet or more wide, although most often they run about 6 feet wide. They are widely mined in South Africa. I know where there are probably 60 ore more pipes in the area. Some were found as early as 1980. Not all are kimberlites and for that reason non of them were tested for diamonds. BTW the diamonds of Borneo, all placer mined for the past 4000 year, come from minettes and lamprophyres which abound in that area. Saskatechewan also has plentiful minettes but they have not been tested for diamonds. The world's largest dyke swarm of lamprophyres occurs on the Ontario/Quebec border where 40,000 dykes have been mapped. It is not a mineralogically explored area. The Wawa bedrock find is one of the most unusual in the world. It has not had much exploration interest primarily because it is not understood, and the main landholders in the area have no drive to explore the targets in any systematic manner. The Wawa area corresponds closely to the Michigan Kimberlite swarm that has also been found to be diamondiferous. The Wawa area has seen far less erosion than Michigan, due to its protective hills, so it may be more productive. EC<:-}