Journal
ELEMENTS
Volume 15, Issue 6, Pages 411-416Publisher
MINERALOGICAL SOC AMER
DOI: 10.2138/gselements.15.6.411
Keywords
kimberlite; diamond; exploration; resource evaluation
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Kimberlites are the main source of natural gem quality diamonds. The intrepid diamond explorer faces three major problems. First, finding a small, usually less than 300 m diameter, kimberlite, which is often highly weathered. Second, evaluating the quantity of diamonds within a kimberlite that often consists of multiple phases of intrusive and extrusive kimberlite, each with potentially different diamond grades. Third, evaluating the rough diamonds, the value of which is dependent on carat-weight, shape, colour, and clarity. Modern advances in mantle petrology, geophysics, geochemistry, geomorphology, and geostatistics now complement historical exploration knowledge and aid in selecting prospective target areas, resource estimation, and evaluating kimberlite-hosted diamond deposits.
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