The Beaufor Mine mineralization presents characteristics of typical Archean greenstone-hosted orogenic gold deposits.

The Beaufor Mine is located within the Bourlamaque Batholith at the eastern contact with the Dubuisson Formation. The Bourlamaque Batholith, a massive, circular, syn-volcanic intrusion with a diameter of approximately 12 km (at surface) is a major geological feature of the Val-d’Or mining camp. This quartziferous granodiorite batholith, intruded by fine-grained dioritic dikes, intrudes the mafic and ultramafic rocks of the Dubuisson and Jacola formations (Malartic Group), as well as the intermediate rocks of the Val-d’Or Formation (Louvicourt Group). The batholith hosts several past-producing mines, such as Belmoral, Wrightbar, Bussières (Old Cournor), Bras d’Or (Dumont) and Lac Herbin.

Gold mineralization at the Beaufor Mine occurs mainly as coarse pyrite with gold inclusions and occasionally as free gold within a complex vein system. These veins are spatially related and parallel to late dioritic dikes that cross-cut the granodiorites.

According to Tessier (1990), two main mineralization episodes have been observed at Beaufor. The first is associated to the late stages of crystallization of the Bourlamaque Batholith. This magmatic hydrothermal mineralization can be observed in sub-vertical centimetric quartz, chlorite, pyrite, chalcopyrite and molybdenite veinlets. These veinlets usually strike towards the northeast and grad ........

In June 2019, production activities at the Beaufor Mine were suspended for an undetermined period and the mine was put into care and maintenance. On June 3, 2021, following continuous strong results from its 42,500-metre drilling campaign and a new plan for the operation of the mine, the Corporation announced its intention to restart production activities for June 2022.

On July 5, 2022, the Corporation announced that it started to process the Beaufor Mine material at the Beacon Mill with a first gold pour on July 27, 2022. As reported on August 31, 2022 the slower ramp-up of the Beacon mill following a number of mechanical and procurement issues, as well as problems with the grade reconciliation of the material stockpiled, caused cash restrictions and forced the Corporation to slow down its mining activities at Beaufor. On September 27, 2022, the Corporation suspended its operations at the Beaufor Mine due to financial and operational challenges and placed the Beaufor Mine under care and maintenance.

Mining method
The long-hole method consists of drilling a series of holes in a stope from one level to another. Most of the long-hole drilling at Beaufor is performed upward. The maximum length for production drilling is approximately 18 m along the vein dip. Spacing between sublevels is planned accordingly. Conventional raises are excavated to initiate the stope opening. Long hole stopes are approximately 20 m wide and separated by 5-m-wide vertical pi ........

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