Industria
Mountain Province Diamonds Provides Drilling Highlights For the Hearne Northwest Extension at Gahcho Kué
Hearne has been a consistent surprise since mining started at Gahcho Kué. Hearne was originally defined with separate north and south lobes, which we redefined in 2018 after drilling out additional kimberlite ore that connected the two lobes. In-pit mining has now discovered more kimberlite extending to the northwest and to depth and so far, the results fully support the opportunity to consider the underground extraction of diamonds at Gahcho Kué in the future. We look forward to further delineating the Hearne northwest extension with the goal of increasing the Gahcho Kué mine life."
The Hearne Northwest Extension was exposed in a bench face in late 2021 during routine mining operations. Geophysical surveys were conducted over the exposed kimberlite, on the ramp over the bench face exposure, and outside of the pit to the west-northwest. Based on in-pit geophysics, drilling focused to the west northwest where similar electromagnetic and gravity signatures were similar to those in the pit. The original exposure of kimberlite in the Hearne pit is provided in the first image. The kimberlite is outlined in yellow, with broken country rock above the kimberlite outlined in green. The horizontal distance across the kimberlite exposure is roughly 25 meters.
Since January 2022 , 14 drillholes (4,284 meters) have defined the Hearne Northwest Extension. The results indicate that the extension trends more northerly than was suggested by the geophysics. The geophysics identified a northwest-trending structure, but two drillholes completed across the structure did not intersect kimberlite. Plan views of the Hearne Northwest Extension relative to the open pit, ground geophysics and recent drilling are seen in the second set of images.
The blue box on the left image is expanded on the right image. Three-digit numbers on the right image mark drillholes completed to date on the Northwest Extension. The dashed line indicates the approximate start of the Northwest Extension. The shape of the extension is approximate and based on modeling of the limited drilling to date.
Nine of the 14 drillholes have intersected hypabyssal kimberlite ('HK') and tuffisitic kimberlite ('TK') with intersects ranging from 23.02 to 114.53 meters. Drillhole MPV-22-595C is still underway in kimberlite with an intersect of 48 meters as at the time of this release. Both the HK and TK rock types are visually consistent with the known internal units at Hearne. The true thickness and depth extent of the Northwest Extension are unknown based on the limited drilling results. A summary of drilling that presently defines the Hearne Northwest Extension is provided below.
Logging, petrographic and mineral chemistry studies are underway to properly define the HK and TK contacts in the extension and their relationship to the main Hearne kimberlite. Following on results of these detailed studies, further drilling will be implemented with the goal to define the volume and depth extent of the Northwest Extension.
is a 49% participant with De Beers Canada in the Gahcho Kué diamond mine located in Canada's Northwest Territories . The Gahcho Kué Joint Venture property consists of several kimberlites that are actively being mined, developed, and explored for future development. The Company also controls 106,202 hectares of highly prospective mineral claims and leases that surround the Gahcho Kué Joint Venture property that include an indicated mineral resource for the Kelvin kimberlite and inferred mineral resources for the Faraday kimberlites.
For further information on Mountain Province Diamonds and to receive news releases by email, visit the Company's website at www.mountainprovince.com.
The disclosure in this news release of scientific and technical information regarding Mountain Province's mineral properties has been reviewed and approved by Matthew MacPhail , P.Eng., MBA, and Tom E. McCandless , Ph.D., P.Geo., both employees of Mountain Province Diamonds and Qualified Persons as defined by National Instrument 43-101
Investor Contact: Rich Matthews, Partner, Integrous Communications, Phone: (604) 757-7179, E-mail: rmatthews@integcom.us, www.integcom.us; Mark Wall, President and CEO, 161 Bay Street, Suite 1410, Toronto, Ontario M5J 2S1, Phone: (416) 361-3562, E-mail: info@mountainprovince.com; Matthew MacPhail , Chief Technical Officer, 161 Bay Street, Suite 1410, Toronto, Ontario M5J 2S1, Phone: (416) 361-3562, E-mail: info@mountainprovince.com
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