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New geological exploration techniques, similar to those being used in Siberia, were needed to search for diamondiferous kimberlites in this type of terrain, which is much different from that of southern Africa (Mc Clenaghan and Kjarsgaard, 2001).
According to Kjarsgaard and Levinson (2002), the modern era of diamond exploration in Canada began in the early 1960s with the traditional search for the diamond “indicator minerals” (such as red Cr-rich pyrope garnet, green Cr-diopside, green olivine, black ilmenite and black Cr-spinel).
Their association with glacial sediments in the Great Lakes region led Hobbs (1899) to propose that the diamonds had been transported by the southward movements of glaciers (which covered large portions of Canada during the Pleistocene epoch, from 2.5 million until about 12,000 years ago) from unknown source rocks in the area near Hudson Bay (see also Bell, 1906).
Since mining operations began in 2003, it has produced over 100 million carats of diamonds.
This article will review the discovery, development, and operation of the mine, which is situated in a remote subarctic setting in the Northwest Territories.
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