Overview
The Dome Mine is one of Canada’s oldest gold mines, commencing production in 1910. Mining operations ceased in 2017, with total production from the mine from both underground and open-pit mining methods totaling close to 17 million ounces.
While the mine is currently closed, there remain significant Mineral Resources at Dome as well as exploration potential. The Company’s technical report, entitled, “Porcupine Complex, Ontario, Canada, Technical Report on Preliminary Economic Assessment”, dated January 13, 2025, included a large Inferred Mineral Resource at Dome, totaling 229,284,000 tonnes at an average grade of 1.49 g/t for 10,978,000 ounces of gold. The Inferred Mineral Resource has been reported considering an open pit mining method and an assumed 20,000 t/d milling scenario. The report did not include any production from Dome Mine in its economic analysis.
Drilling programs and metallurgical test work is planned to further evaluate the opportunity to resume mining operations at Dome, which represents an attractive opportunity for a new source of production. The deposit remains open at depth, and parallel veins to those mined out also remain prospective.
Mineralization at the Dome Mine occurs within mafic to ultramafic volcanic rocks, along with felsic intrusive rocks and sedimentary units. The primary host rock is the Tisdale Group. Gold at the Dome Mine appears mainly as native gold in quartz or ankerite veins. Sulphides are present in all mineralization types, and average about 2–3%. Pyrites with lesser pyrrhotite are the dominant sulphides; chalcopyrite, sphalerite and galena are also found locally.
Exploration
In addition to upgrading the large Inferred Resource at Dome, the potential exists to establish new Mineral Resource within blocks in/around the open pit where existing drill spacing is currently insufficient for Inferred Mineral Resources, as well as to establish new Mineral Resources at depth that are amenable to underground mining methods.
Resources
|
Resources |
Tonnes |
Grade |
Ounces |
|---|---|---|---|
|
(kt) |
(Au g/t) |
(koz Au) |
|
|
Measured |
-- |
-- |
-- |
|
Indicated |
-- |
-- |
-- |
|
Total M&I |
-- |
-- |
-- |
|
Inferred |
229,284 |
1.49 |
10,978 |
For a detailed review of Mineral Resources at Dome, please see the technical report entitled, “Porcupine Complex, Ontario, Canada, Technical Report on Preliminary Economic Assessment”, with an effective date of January 13, 2025, which is available on this website and at www.sedarplus.ca. The Inferred Mineral Resources at Dome were not included in the technical report’s economic analysis.
