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Gold/Mining/Energy : Canabrava Diamond

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To: m.philli who wrote (2384)	11/8/2002 6:00:22 PM
From: Diamond Daze	Read Replies (1) of 2402

From CNB web site.. "During 1999, local miners recovered a 79-carat deep pink and 54-carat pink diamond from the Rio Abaete a few kilometres downstream from the Joint Venture claims. Regular recovery of such high value stones prompted the Joint Venture to allocated about 25% of its resources to an alluvial exploration program. A specialist alluvial team completed a comprehensive drainage basin and diamond distribution analysis and extensive follow-up field investigations were undertaken on five of the major drainage basins within the Project area during 2000. This work was successful in identifying several sites along the Rio Abaete and Rio Paranaíba with commercial diamond potential. However, complex landholder and permitting issues have prevented further evaluation of these sites and the JV's future strategy with respect to developing the alluvial resources is under consideration."" Well now that I think about it a bit more, I was speaking with Rory at least two years back, it seems to me the model was indeed a covering up or sealing of kimberlite. We also know that many pipes contain more than one eruption phase. If I am not mistaking the Victor pipe is at least two different eruption phases. The continental drift of South America I believe has been much faster that the drift of Africa this may explain different mantle types occurring in the same pipes. We also know of a huge meteor impact some 60 million years ago that hit the Yucatan peninsula I would suggest that impact may have pushed up more mantle material through the same faults (least path of resistance) in a very large area of circumference within that impact zone and perhaps covered all existing pipes with another type of mantle material like kamafugite. Perhaps an impact of that size would set off enough volcanic activity to encase all the kimberlites that were there with another type of rock like kamafugite through the same pipes and fractures that were already present. I guess one thing to consider if this kamafugite did blow through the same fractures and pipes is the remaining material economic….well it would take a very large sample to figure that out as you can see those two diamonds found above are very, very large and very, very valuable since the kamafugite is barren does that pose other mining problems? Does all the material need to be removed? I should very much like you to provide me with a link to these reports so I may read them in entirety....DD

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