Foliated granodiorite that is part of a batholithic mass that underlies much of the northeast part of Glacier Bay National Park and Preserve. A resource exists in the mid 0.0X percent range for copper and low 0.0X range for molybdenum; local zones are of higher grade. K-feldspar occurs as a secondary mineral in and near quartz veins, and the host granodiorite is anomalously rich in K-feldspar, particularly south and east of the deposit. The occurrence of copper and molybdenum in the Bruce Hillswas first reported in 1963. Seven claims were staked in 1967 and the deposit was blanketed by 55 claims in 1969.
Study area name
U.S. Geological Survey (2014a); Kimball and others (1978); Rossman (1963)
U.S. Geological Survey National Mineral Resource Assessment Team (2002)