(IDEX Online) - Mountain Province Diamonds says it has discovered additional kimberlite at the Gahcho Kue mine, in Canada's Northwest Territories.The Toronto-based miner says a kimberlite exposure was identified during routine mining operations in 2021. Drilling programs the following year indicated a significant volume of previously unknown kimberlite could exist.Ten of 11 drillholes this year have intersected kimberlite at the mine's Hearne Northwest Extension."We are actively engaged with our operating partner De Beers to look at ways to recover this deeper kimberlite by underground mining," said Mark Wall, Mountain Province's president and CEO. "We will consider further drilling if the detailed work on this hole continues to return positive results."The Gahcho Kue joint venture consists of several kimberlites that are actively being mined, developed, and explored for future development.Commercial production at the mine began in March 2017 and has an estimated 12-year life.Pic courtesy Mountain Province Diamonds