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Gold/Mining/Energy : Canadian Diamond Play Cafi
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To: VAUGHN who wrote (311)11/22/2002 6:24:23 PM
From: teevee  Read Replies (1) of 16206
 
vaughn,
In the case of the TrustMe claims that TeeVee referred to, apparently a few of the G-10's had exceptionally high chrome content and an unusually large number of the pyropes recovered plotted into the G-10 vs G-9 category. In addition, apparently there were a number of eclogitic garnets with good geochemistry recovered.

However, no knowledgeable commentator should imply that a mining company's trumpeted high quality geochemistry in any way heralds the probability of Diavik grade pipes! It simply increases the potential that the kimberlite may be economic by virtue of having sampled the diamond stability field, but as you know, there are a myriad of other factors that determine ultimate economic potential.

I didn't refer to the TrustMe claims. I believe Letmebe Frank re posted Willp's comments. I do agree that Willp is a knowledgeable commentator. I don't agree that Willp's comments in any way implied that a mining company's trumpeted high quality geochemistry in any way heralds the probability of Diavik grade pipes. Your post essentially reiterates what I have previously stated: good chemistry only indicates that a pipe may be diamondiferous and because diamond content in the upper mantle is heterogeneous, determining grade and size distribution of diamond in any diamond bearing pipe is therefore an empirical process that is costly and time consuming.

Another "indicator" worth paying attention to is the percentage of mantle xenoliths in a kimberlite.

Any juicy rumors from the YK geoscience forum?

cheers,
teevee
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