Mountain Province Diamonds Completes Phase One Drilling for the Hearne Northwest Extension Discovery at Gahcho Kué Mine

Mining and ExplorationRough Market

The Hearne kimberlite is one of four kimberlites being mined at Gahcho Kué Mine, which is presently ranked as 4th in the world by annual diamond production. Mountain Province is a 49% shareholder at Gahcho Kué with joint venture partner De Beers Canada as operators.
The Hearne Northwest Extension was first visually identified in late 2021, when kimberlite measuring 25 meters across in a bench face was exposed during routine mining operations. Ground-based geophysics initially suggested a west-northwest direction for the extension, but a northwest direction has been confirmed from the phase one drilling.

Phase one drilling of the Hearne Northwest Extension includes 16 drillholes totaling 5,040 meters. Ten of the sixteen drillholes have significant kimberlite intersections that have been used to model this large extension. Completion of the phase one drilling and subsequent modeling of the data suggests that a significant volume of kimberlite may be present.

Mark Wall, the Company's President and Chief Executive Officer comments that “the latest results generated with our operating partner De Beers suggest that the Hearne Northwest Extension is a significant discovery, potentially equal in volume to the Hearne orebody as it was originally defined.”

Source MPD
Photo Credit: MPD