Coon and Plowman Prospect, Hope Mining District, Kenai Peninsula Borough, Alaska, USAi

Regional Level Types
Coon and Plowman Prospect	Prospect
Hope Mining District	Mining District
Kenai Peninsula Borough	Borough
Alaska	State
USA	Country

Location: The prospect is in the SW1/4 section 1, T. 9 N., R. 2 W., of the Seward Meridian. It is at 1,600 feet elevation, on the north side of Bear Creek along a small north-flowing tributary about 2 miles from the head of Bear Creek. This is location 9 of Cobb and Tysdal (1980), location 4 of Cobb and Richter (1972), and location S-302 of Jansons and others (1984). Cobb and Tysdal (1980) summarized the relevant references under the name Coon (and Plowman).
Geology: This deposit consists of sulfide-bearing, quartz-calcite veins that are 2 inches to 1 foot thick in a shear zone at least 7 feet wide that cuts slate and graywacke host rock of the Valdez Group of Late Cretaceous age (Martin and others, 1915). The veins contain silver, galena, arsenopyrite, pyrite, and argentiferous galena. The veins and shear zone strike N30E and dip vertically, nearly parallel to bedding of the host rock.
Workings: In 1915, development work consisted of an open cut 7 feet wide with a 15-foot vertical face. The cut was in a small gulch that follows the shear zone (Martin and others, 1915). A 40-foot adit was present in 1933 (Tuck, 1933) but has caved (Tysdal, 1978 [MF-880-A]).
Age: Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age.

Commodities (Major) - Ag; (Minor) - Pb
Development Status: None
Deposit Model: Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)

Other Databases

Link to USGS - Alaska:	SR010

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References