West Gladiator

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Ag; Zn
Ore minerals chalcopyrite; malachite; pyrite; pyrrhotite
Gangue minerals chlorite; epidote; quartz

Geographic location

Quadrangle map, 1:250,000-scale LC
Quadrangle map, 1:63,360-scale A-3
Latitude 60.19
Longitude -153.93
Nearby scientific data Find additional scientific data near this location
Location and accuracy 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.

Geologic setting

Geologic description

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).
Geologic map unit (-153.932199645412, 60.1893408819389)
Mineral deposit model Porphyry Cu? or Polymetallic vein? (Cox and Singer, 1986; models 17? or 22c?)
Mineral deposit model number 17? or 22c?
Age of mineralization Tertiary or younger.
Alteration of deposit Chlorite and epidote in shear zones

Production and reserves

Workings or exploration 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).
Indication of production None
Reserve estimates No reserves
Production notes No production

Additional comments

Site is in Lake Clark National Park and Preserve.

References