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Gold/Mining/Energy : ASHTON MINING OF CANADA (ACA)

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To: Famularo who wrote (4705)	4/2/1998 12:46:00 PM
From: Jesse	Read Replies (1) of 7966

Okay folks, time for some more Hotlinks for those who wish to explore this fascinating field: A to Z of a gem diamond deposit: archangeldiamond.com Including, "Testing the Kimberlite - Unlike gold deposits, diamonds are not uniformly distributed throughout the kimberlite but occur randomly with a 'nugget' effect being very obvious. The value of a tonne of ore is a function of not only the grade of mineralisation but also the value of the diamonds found in that tonne of ore. Bear in mind that a one carat sized diamond (the size of a small pea) randomly dispersed in 1 x 1 x 0.5 metres of kimberlite (1 tonne) is an unusually high grade. Finding that 'pea' with a 112mm diametre wide drill core is, quite obviously, very difficult and needs a high degree of experience and professional expertise from all members of the exploration team. As with any statistically challenging evaluation problem, confidence in diamond grade increases with the amount of sample recovered and distribution of the sample sites." Kimberlite - Structure and Evolution of Cratonic Lithospheric Roots: geofys.uu.se Seismic anisotropy of the deep crust and upper mantle: dstu.univ-montp2.fr Tectonic domains of Alberta: nrcan.gc.ca "Peace River Arch Industry Survey Experiment (PRAISE)" including an aeromag map of northern AB: nrcan.gc.ca About "High-resolution airborne magnetometer surveys": resudox.net Geophysical Exploration Methods: imcg.wr.usgs.gov Geochemical Exploration Methods: imcg.wr.usgs.gov Geological Exploration Methods: imcg.wr.usgs.gov Geophysics on the Internet (plenty to view): uh.edu Geophysics, Vol. 60, No. 6 (lotsa theory): seg.org Abstract of a discussion of Precambrian basement: age versus lithology in the search for primary diamond deposits: geosociety.org^annual/s/abs/51019.htm~ An photo of Kimberlite containing diamond: www-glg.la.asu.edu ----------------- There ya are! Cheers, -j :>

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