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

To: m.philli who wrote (387)	12/12/2002 7:29:18 PM
From: E. Charters	Read Replies (1) \| Respond to of 16207

It is unlikely that the diamonds or more importantly the pyrope came from the Currie Area. Float of the kind found in Wawa has a specific transport distance based on the degree of friability, the amount of present decrepitation, the climate for the past 20 million years, the amount of erosion of the surrounding area, and stream flow. In order to be sure of tracing float you need material that does not survive well, and follow that transport distance. The diallage (chrome diopside) survives the least well, averaging about 15 to 30 miles of transport before disappearing. Pyrope in Canada could travel about 50 to 100 miles. Diamond could travel 500 or more. But industrial degraded diamond of this type probably did not travel more than 100 miles at most. However the stones were extremely abraded, so bets are off. This could be a function of the extreme terrain in this area wich encourages milling effect. The reason the indicators were found in Wawa is because of the concentrating effect of the fast rivers in the area, and the hill side conduits. In Kap like drift, they would not have been found due to extreme dilution. A find of one pyrope of kimberlitic sort is considered significant. The entire Russian exploration program for diamonds was launched on the finding of 3 pyrope garnets on the Yakuts River. The exact distance upice (150 miles) that the sources were to be found was predicted by V. Sobolev by examining the condition of the pyrope and knowing the effect of the Siberian climate on chemical weathering. It is instructive to note the vast difference between the scientific Russian approach to exploration and the childish and inane ignorance displayed by Canadian geologists. One is shocked to hear the comments about the Wawa discovery by supposedly knowledgeable people. One hears that it is impossible to tell how far the garnets have come, that the diamonds have could have been dragged 1000 miles, that the diallage is not significant because it is not "good" diallage, etc etc... It is clear from the comments that the prospecting efforts of the average company is drive by people who just don't know. What is true is this. 1. The Wawa pyrope has the best chemistry ever found in North America outside Lac de Gras. 2. The Wawa pyrope highly probably comes from an economic or near economic KIMBERLITE. Such pyrope are ALWAYS accompanied by diamonds. Note I say, SUCH pyrope. This is not wrong. Why is it highly probable? Because it was found few pyrope, but the chemistry was good. What does this tell you? If the kimberlite was no good, then of the pyrope you found, it would be 20 TO 30 TO ONE AGAINST FINDING GOOD CHEMISTRY. But here, of a few pyrope found a good number, far more than are required in ratio to have a diamondmine, have GOOD CHEMISTRY! What are the chances of that in a bad pipe? Damn small. Let me clue you in. You find 3 pyrope. They are all good chemistry. So ---> Diamond mine upice. Geo tells you no way to tell for sure? Tell him to go back to school, study statistics, Bernoulli and Pascal probability and Sobolev for 2 years VERY CAREFULLY, and failing that, get an IQ upgrade. 3. The "industrial" type diamonds are NOT industrial at all. They are just very poor quality GEM diamonds riddled with graphite inclusions. This is GOOD, not bad, as it illustrates a number of things a. They did not come from far as they are too low quality to survive much milling by glaciers. Usually drift diamonds are very high quality because diamonds with many flaws break up and are not found. We have the opposite here so the source is near. b. The source pipe is low temperature and low oxygen fugacity pipe otherwise, such diamonds would not survive in mantle to surface transport ..thus the diamonds are large within the pipe and the diamonds in it survived well. c. The diamonds are large. The diamonds comefrom a pipe that produces large diamonds. d. The low quality of the diamonds does not matter to the general quality of the diamonds from the source pipe, as from any pipe diamond may vary widely in quality. With a low sample size no conclusions can be drawn about source quality overall. **************** The "silver" is the diallage. Silver is a metal that dissolves quickly. Ergo if you find it in anomalous quantities, what do you know? That economic silver or some kind of metal lies below. Right below. If it were 500 yards away you would not find the silver anomaly at all. Diallage is the same, but not as pronounced. Diallage dissolves in about 15 miles in some climates. So any train of lots of diallage must come from lots of kimberlite nearby. But the trouble is this diallage is not of the type that comes from economic diamond mines. So it is said by "they". Except for one problem. No authority that uses economics indicators uses ANY FEATURE of diallage to predict economics! So what are "they" talking about? Good question. Does the chemistry of this diallage matter? Well maybe. But I would just use it as a general indicator that says kimberlite ahoy!, probably. Why? Because of its preponderance in a train-field of all sorts of other indicators. We know there is lots of kimberlite upice. They do not have to be all economic. Caveats. There is no drift pyrope found so far with "kelphytic rims", the black rind on the pyrope indicating very short transport distance. There are in Wawa very old, large kimberlites found that are very deformed, indicating they were emplaced possibly before the Algoman orogeny. They appear to be barren. Goods things. Many known diatremes and obvious targets have not been drilled. One could have field day in there. It is an excellent place for risk capital. Recommendations. A company should be formed that knows what its doing about float tracing, diamond chemistry, anomaly picking, and target picking for a regional play. Past success may indicate future. EC<:-}