Unnamed (north bank of Beaver Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Hg; W
Other commodities As; Cr; Pb; Zn
Ore minerals unspecified sulfides
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale ID
Quadrangle map, 1:63,360-scale C-1
Latitude 62.66824
Longitude -156.18358
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 800 feet on a steep bluff about 0.5 mile north of Beaver Creek. It is about 1.0 mile southwest of hill 1170, about 0.8 mile east-southeast of hill 985, and bout 0.2 mile west of the northeast corner of section 27, T. 30 N., R. 37 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of quartz stringers in an altered felsic(?) dike that cuts shale and sandstone of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). Grab samples contain up to 1.00 percent arsenic, more than 10.0 parts per million (ppm) mercury, 200 ppm tungsten, 100 ppm lead, 1,000 ppm chromium, and 120 ppm zinc (McGimsey and others, 1988).
Geologic map unit (-156.185943943681, 62.6675989942016)
Mineral deposit model Polymetallic vein? (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c?
Age of mineralization Unknown; the dike is undated.
Alteration of deposit Silicification.

Production and reserves

Workings or exploration The site was sampled by the U.S. Geological Survey in 1984 (McGimsey and others, 1988).
Indication of production None