Canadian Mining Journal


DIAMONDS: Stornoway seeks more resources at Renard mine

Stornoway is moving Renard 3 underground mining forward by several years. (Image: Stornoway Diamond Corp.)

QUEBEC – Since the beginning of the year, Stornoway Diamond Corp. of Montreal has been drilling and sampling at the Renard diamond mine in the James Bay region, about 350 km north of Chibougamau. The aim is to upgrade resources to reserves so that the mine plan can be accelerated to include the Renard 3 and Renard 4 kimberlites.

Renard 3 has been delineated to a depth of 315 metres and remains open at depth. The kimberlite was mined between 2016 and April 2018 as part of the Renard 2-3 open pit. Now it looks as if R3 can be added to the underground production schedule above the 290-metre level in 2019, several years earlier than currently planned.

Stornoway has sampled Renard 4 from surface, recovering about 3,000 carats so far. There have been three “special” stones the presence of which supports the creation of another open pit – Renard 4-9 – to supplement the underground ore.

A new ore sorting circuit was added to the Renard operation in May 2018 to reduce waste and minimize diamond breakage.

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