Granite Creek

Mine, Undetermined

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale BH
Quadrangle map, 1:63,360-scale D-3
Latitude 60.98
Longitude -160.09
Nearby scientific data Find additional scientific data near this location
Location and accuracy Granite Creek is a short north tributary to Tuluksak River (BH014). The mouth of Granite Creek, at an elevation of about 350 feet, is 3 miles upstream from the lowlands of the lower Kuskokwim River. Placer mine tailings are present along about 3/4 mile of lower Granite Creek. The map site is at the approximate midpoint of the placer workings, at the southwest corner of section 3, T. 10 N., R. 61 W., of the Seward Meridian. This is locality 10 of Cobb (1972 [MF 455]) and of Hoare and Cobb (1977).

Geologic setting

Geologic description

About 3/4 mile of lower Granite Creek has been placer mined for gold. Most of the Granite Creek drainage is within a mid-Cretaceous granitic pluton but the lower part crosses the contact with hornfels in Jurassic volcanic rocks (Box and others, 1993). Mining took place in 1938-1940 and in 1946 but additional information about the placer deposit is not available (Hoare and Cobb, 1977).
Geologic map unit (-160.092296472494, 60.9792662238896)
Mineral deposit model Placer Au-PGE (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Placer mine tailings from open-cut operations are present along about 3/4 mile of lower Granite Creek.
Indication of production Yes; small

References

MRDS Number A013388
Reporters Travis L. Hudson
Last report date 3/24/2001