Winspear Diaminds (Bulls Board) Message Board

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Gold/Mining/Energy : Winspear Diaminds (Bulls Board)

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To: Rick the Vet who wrote (825)	5/19/1999 1:41:00 AM
From: Gord Bolton	Read Replies (1) of 1172

One way of thinking about the logarithmic distribution of the diamonds in a resource is to think of it as a triangle with one side level with the horizon or perhaps a pyramid. If one put all the smallest stones on the bottom and always put larger stones on top of smaller stones one would have a real and graphical image of the logarithmic distribution. In different deposits one may need to go higher on the pyramid to find diamonds of commercial size. Ideally most of the weight in your pyramid would fall into the commercial category. When analyzing a deposit, the stones cannot fit into more than one size category as it is the weight that is used to determine size for this purpose. Having built a data base on weight, one compares the number of stones and the total weight in stones between different weight categories. There are some constant formulas that will apply with consistency to most diamond deposits and then, of course, each emplacement will have it's own unique signature based upon the encountered courseness of the diamonds and the carats per tonne. It is possible to have a lot of very fine diamond crystals in a deposit, have each sampled core return numerous microdiamonds, and have the deposit turn out to be a dud because macro diamonds were not present in any significant quantity. The diamonds are so fine that they are only good for sandpaper. Another deposit may be very hard to detect because of the near absence of microdiamonds and the small chances of hitting a macro with a small diameter drill. The existence of diamond crystals as well as their size and distribution is dependent upon the conditions-heat, pressure and cooling rate-involved in the emplacement process. It is very much like making fudge, where one must heat the mix to a precise temperature and time, and then cool to get the texture and taste that is desireable The next best thing to actually hitting a macro in the drill core is finding a lot of micros which are on the large size. I'm not sure if this adequately explains why one does not need huge amounts of material to predict grade or not but I am certain that some smart mathamatically minded diamond hunters have a computer program that can quickly forcast the likely outcome of mining from the relationship of the various sizes found in a sample containing a minimum number of diamonds.

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