The Bluff prospect contains disseminated pyrite, chalcopyrite, molybdenite, tourmaline, and magnetite within high-level porphyritic quartz monzonite and granodiorite intrusions of mid-Cretaceous to early Tertiary age. Strong hydrothermal alteration. Explored by surface sampling, diamond drilling, and geophysics in the early 1970s; there has probably been more exploration in recent years; staked in 1987 and dropped two years later.
Study area name
U.S. Geological Survey (2014a)
U.S. Geological Survey National Mineral Resource Assessment Team (2002)