Unnamed Occurrence (ARDF - SB009; on Mitrofania Island), Lake and Peninsula Borough, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - SB009; on Mitrofania Island)	- not defined -
Lake and Peninsula Borough	Borough
Alaska	State
USA	Country

This occurrence is on lands selected by the Bristol Bay Native Corporation, near the boundary of the Alaska Peninsula National Wildlife Refuge.
Location: This occurrence is located on Mitrofania Island approximately 1,200 feet north of the north shore of Sosbee Bay (MacKevett and Holloway, 1977, locality 9; Wilson and others, 1988, locality 9). The map site is at an elevation of about 500 feet, 0.4 mile due east of the center of sec. 11, T. 50 S., R. 62 W., of the Seward Meridian. The location is accurate to within 1 mile.
Geology: The country rocks in the area of this occurrence are Tertiary volcanic rocks (Wilson and others, 1995). MacKevett and Holloway (1977) described the occurrence as an altered zone associated with Tertiary granitic rocks, but mapping by the U.S. Geological Survey in the mid-1980's did not indicate any granitic plutons in the general area (Wilson and others, 1995). Samples of volcanic rock collected by the U.S. Geological Survey contained as much as 50 ppm copper, 15 ppm lead, and 55 ppm zinc (Angeloni and others, 1985).
Workings: The U.S. Geological Survey mapped and sampled this area in the mid-1980's (Wilson and others, 1988; 1995). Samples of volcanic rock contained as much as 50 ppm copper, 15 ppm lead, and 55 ppm zinc (Angeloni and others, 1985).

Commodities (Major) - Cu, Pb, Zn
Development Status: None

Other Databases

Link to USGS - Alaska:	SB009

Other Regions, Features and Areas containing this locality

References