Mount Brussilof mine (Bay Mag Mine), Radium Hot Springs, Golden Mining Division, British Columbia, Canada

Magnesite mine.
Common impurities of the magnesite ore are isolated rhombohedral dolomite crystals, calcite veins, pyrite veins, subvertical fractures filled by a mixture of beige ankerite, calcite and chlorite, coarse radiating or single quartz crystals and coarse pyrite pyritohedrons and octahedrons disseminated within sparry magnesite. Chalcocite, fersmite, phlogopite, talc and coarse, white acicular palygorskite were also observed in the mine. Boulangerite, huntite and brucite were reported from laboratory analysis (Rob Woodside fieldwork, 1990).

Collecting was allowed in earlier times, but is presently prohibited.