USGS OFR 81-1095, "MINERAL RESOURCES OF THE FLINT CREEKRANGE WILDERNESS STUDY AREA GRANITE AND POWELL COUNTIES, MT"WFOC MINERAL PROPERTY FILES NO. 0300390457ERICKSON, G.E. AND MARKS, L.Y. MINERAL RESOURCES OF THEFLINT CREEK. RANGE STUDY AREA, MONTANA: U.S. GEOLOGICAL SURVEYBULL. IN PREPARATION