Major Mines & Projects | Arcturus Mine
The mineralized shear zones in the Arcturus mine are characterized by silicification, biotite, and K-feldspar alteration. Gold mineralization is associated with pyrrhotite, arsenopyrite, and also occurs as free gold, which contributed up to 10% of production. There are 6 major reefs at Arcturus: Venus, Arcturus, West, Slate, Saturn, Planet.