War Eagle Prospect, Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
War Eagle Prospect	Prospect
Chistochina Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This prospect is on the west side of MacDougal Creek. It is at an elevation of about 3,500 feet, 4,200 feet north of elevation 5710, and 4,000 feet southwest of elevation 5120. The site is in the SE1/4 of section 34, T. 3 S., R. 9 E. of the Copper River Meridian. This is locality 130 of MacKevett (1976) and locality 32 of MacKevett and others (1978). The location is accurate to within about 100 feet. Cobb and MacKevett (1980) included this prospect under the name 'War Eagle'.
Geology: This deposit consists of masses of magnetite and garnet up to 25 feet wide that are associated with sulfide-bearing diopside skarn in Triassic Chitistone Limestone adjacent to a Jurassic granodiorite pluton (Moffit and Mertie, 1923; MacKevett, 1976). The skarn assemblage includes calcite, chlorite, epidote, garnet, diopside, and quartz. The sulfide assemblage in the skarn includes pyrite, pyrrhotite, and chalcopyrite. A 5-foot-long channel sample across an outcrop of massive magnetite contained 62.07 percent iron, but the total resource was estimated to be less than 10,000 tons (Van Alstine and Black, 1946). A sample of skarn contained 1,000 parts per million copper (MacKevett, 1976). The deposit was explored by a 100-foot-long adit and surface cuts.
Workings: The deposit was explored by a 100-foot-long adit and surface cuts.
Age: The Fe skarn is probably related to a Late Jurassic intrusive body.
Alteration: Calc-silicate replacement of limestone.
Reserves: A 5-foot-long channel sample across an outcrop of massive magnetite contained 62.07 percent iron, but the total resource was estimated to be less than 10,000 tons (Van Alstine and Black, 1946).

Commodities (Major) - Cu; (Minor) - Fe
Development Status: None
Deposit Model: Fe skarn (Cox and Singer, 1986; model 18d)

Other Databases

Link to USGS - Alaska:	MC062

Other Regions, Features and Areas containing this locality

References