Joint-Venture partners Diavik Diamond Mines and Aber Resources (ABZ-T) have released preliminary results from a program that involved the drilling of 11 large-diameter holes at their Diavik diamond project in the Lac de Gras area of the Northwest Territories.
Diavik is a subsidiary of Rio Tinto (RTP-N).
At pipe A-154-south, which previous drilling had extended to only a 250-Metre depth, five new holes were drilled to depths of 387 to 532 metres. So far, about 12 dry tonnes of kimberlite from the deepest intercepts have been processed, and grades in all five holes are comparable to those encountered in the upper portions of the pipe.
About 5 km southwest of A-154-south, five holes were drilled into pipe A-21, producing 23.6 dry tonnes of kimberlite grading 2.73 carats per tonne. About 9 km east of pipe A-154-south, a hole drilled into pipe A-10 produced 6.7 wet tonnes of kimberlite, yielding four diamonds weighing 0.11 carat.
By the end of this month, the partners expect to release an updated model of pipes A-154-south, A-154-North, A-418, and A-21, including grade and resource estimates. Processing of the remaining 1,510 tonnes of kimberlite from pipe A-418 will be completed by September.
Operator Diavik Diamond Mines holds a 60% interest in the project, with the remainder held by Aber.
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