West Gladiator Occurrence, Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USAi

Regional Level Types
West Gladiator Occurrence	Occurrence
Bristol Bay Mining District	Mining District
Lake and Peninsula Borough	Borough
Alaska	State
USA	Country

Site is in Lake Clark National Park and Preserve.
Location: Locality is the top of peak 5,251, south of Copper Mountain, roughly 6 km N-NW of the mouth of Ospook Creek. This is locality 33 of Nelson and others (1985) and locality 32 of MacKevett and Holloway (1977). Sec. 11, T. 1 N., R. 27 W., of the Seward Meridian. Location is accurate within 1.6 km.
Geology: Greenstone, metasediments and volcanic flows (?), are intruded by a Tertiary medium-grained hornblende-biotite granodiorite. The rocks are hornfelsed near intrusive contact. Fractures in the greenstone near intrusive contact contain malachite and chalcopyrite. Quartz veins containing epidote, chalcopyrite, and malachite cut intrusive rocks near contact also. One of five chip samples of greenstone assayed 910 ppm Cu and 4.3 ppm Ag. A sample from a quartz-epidote-chalcopyrite-malachite vein yielded up to 22 ppm Ag, 1.0 percent Cu, and 250 ppm Zn (Resource Associates of Alaska, 1976).
Workings: One of five chip samples of greenstone assayed 910 ppm Cu and 4.3 ppm Ag. A sample from a quartz-epidote-chalcopyrite-malachite vein yielded up to 22 ppm Ag, 1.0 percent Cu, and 250 ppm Zn (Resource Associates of Alaska, 1976).
Age: Tertiary or younger.
Alteration: Chlorite and epidote in shear zones
Production: No production
Reserves: No reserves

Commodities (Major) - Cu; (Minor) - Ag, Zn
Development Status: None
Deposit Model: Porphyry Cu ? or Polymetallic vein ? (Cox and Singer, 1986; models 17 ? or 22c

Other Databases

Link to USGS - Alaska:	LC042

Other Regions, Features and Areas containing this locality

References