Click here to skip to the content



Colour image of brown rock with smooth edges and some sheen
Antimony. Devonian. Lake George(?), New Brunswick. New Brunswick Museum (NBMM 2005). Image width 5 cm. Lake George is a polymetallic mineral deposit and formerly the largest antimony producer in North America. The geology is an Early Devonian granodiorite stock, perhaps about 412 million years old, produced as part of a volcanic island arc setting. Quartz veins containing stibnite and molybdenite cut the Lake George granodiorite stock. Sources of antimony included both the mineral stibnite and native antimony.