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

To: skelly who wrote (487)	1/30/1998 7:45:00 AM
From: George J. Tromp	Read Replies (1) \| Respond to of 2251

Hello Skelly: Usually what occurs., is with the 2 " cores which are used for definition drilling., they are logged by the on site geologists. Most companies will take represenative samples from the core., which should be reflective of the whole core. The cores can be handled in several ways., they can be split., with the company keeping part of the core for backup analysis within their own labs or logging permanent back up samples. The represenative samples will usually be shipped to an independant lab such as Lakefield Research to do the caustic analysis which is a chemical process used to dissolve the core samples without damaging the integrity of the core. Early on in the NWT., companies some companies., actually crushed the 2" core as well. This can damage the diamond counts and lead to problems down the road. Normally it takes 4 to 6 weeks for a lab such as Lakefield to produce results. on the samples. At the early exploration stage when companies are defining the integrity and limits of the deposit., the caustic fusion analysis provides the most accurate method of determing total indicator., diamonds within that core. That knowledge aids the explorer in postulating the continuity., dilution factors., geochemistry which may be indicative of the whole pipe. When one advances to the mini-bulk stage the larger 6" cores are used. The ore is usually processed thru a diamond proccessing facility., such as Kennecott diamond recovery plant in Yellowknife. With the crushing not having as critical affect on total diamond extraction., it is the most appropriate approach in that phase of exploration. Skelly go to the Rex Diamond Mining thread they have an excellent synopsis of diamond processing and extraction on their website. Walt may be able to add some more in regards to those questions as well. Sincerely George J. Tromp