Ophir Creek

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale RB
Quadrangle map, 1:63,360-scale B-5
Latitude 64.25302
Longitude -155.38607
Nearby scientific data Find additional scientific data near this location
Location and accuracy Ophir Creek is a southwest-flowing tributary of the Sulatna River and is approximately 8 miles long. Coordinates corresponding to location 25 of Cobb (1972 [MF405]) are for the approximate midpoint of placer ground, in section 30, T. 14 S., R. 18 E., Kateel River Meridian. The location is accurate.

Geologic setting

Geologic description

The bedrock underlying Ophir Creek is intermediate to mafic intrusive rocks and is probably greenstone (Puchner and others, 1998). An unnamed rich gold discovery was reported along Ophir Creek in 1913 (Eakin, 1914). There was some mining in and about 1956 (Cass, 1959; Eberlein and others, 1977). Additional mining and(or) exploration occurred between 1988 and 1991 (Green and others, 1989; Bundtzen and others, 1990; Swainbank and others, 1991; Bundtzen and others, 1992).
Geologic map unit (-155.388475917643, 64.2524185878301)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Exploration and discovery of gold took place along Ophir Creek in 1913, and some mining took place in and about 1956 (Cass, 1959; Eberlein and others, 1977). Additional mining and(or) exploration took place between 1988 and 1991 (Green and others, 1989; Bundtzen and others, 1990; Swainbank and others, 1991; Bundtzen and others, 1992).
Indication of production Yes; small

References

MRDS Number A015548

References

Reporters C.E. Cameron (Alaska Division of Geological and Geophysical Surveys)
Last report date 3/22/2000