Tazimina Prospect, Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USAi

Regional Level Types
Tazimina Prospect	Prospect
Bristol Bay Mining District	Mining District
Lake and Peninsula Borough	Borough
Alaska	State
USA	Country

Resource Associates of Alaska, Inc. (1976), reported the schists do not contain enough economically viable mineralization to warrant further work. The massive sulfide boulders, though containing ore grade material, probably come from relatively small lenses or pods. Site is in Lake Clark National Park and Preserve.
Location: Locality is 4.8 km up an unnamed southward flowing tributary of Tazimina River or 5.6 km NE of the eastern end of Upper Tazimina Lake. This is locality 38 of Nelson and others (1985) and locality 37 of MacKevett and Holloway (1977). Sec. 22, T. 1 S., R. 27 W., of the Seward Meridian. Accurate within 1,600 meters.
Geology: Mineralization is confined to older schistose rocks; the Lake Clark quartz-sericite-chlorite schist contains 1 percent to 10 percent disseminated pyrite and local massive-sulfide pods having as much as 50 percent pyrite. Chalcopyrite and native copper disseminated as small grains in trace amounts. Some six-inch sulfide veins or beds parallel to the foliation of schist contain 60 percent pyrite, 20 percent quartz, 10 percent magnetite, 5 percent chalcopyrite, 1 percent bornite, and trace of native copper. Massive sulfide float boulders up to six feet in diameter contain 17 ppm Ag, 5,000 ppm Cu, 5,000 ppm Pb, and 30,000 ppm Zn. These boulders could be glacial erratics but the source is believed to be within 90 meters of their current location (Resource Associates of Alaska, 1976).
Workings: Massive sulfide boulders up to six feet in diameter contain 17 ppm Ag, 5,000 ppm Cu, 5,000 ppm Pb, and 30,000 ppm Zn (Resource Associates of Alaska, 1976).
Age: Late Paleozoic or younger.
Alteration: Unknown
Production: No production
Reserves: No reserves

Commodities (Major) - Cu, Pb, Zn; (Minor) - Ag
Development Status: None
Deposit Model: Kuroko massive sulfide (metamorphosed) ? (Cox and Singer, 1986; model 28a ?)

Other Databases

Link to USGS - Alaska:	LC052

Other Regions, Features and Areas containing this locality

References