Unnamed (southwest of Long Lake)

Prospect, Inactive

Commodities and mineralogy

Main commodities Pb
Other commodities Ag
Ore minerals galena
Gangue minerals carbonate minerals; quartz

Geographic location

Quadrangle map, 1:250,000-scale GU
Quadrangle map, 1:63,360-scale D-1
Latitude 62.798
Longitude -144.218
Nearby scientific data Find additional scientific data near this location
Location and accuracy The prospect is an elevation of about 4,700 feet on the west side of an unnamed tributary to Flat Creek at . It is about three-quarters of a mile southwest of the west end of Long Lake. It is close to the NE corner of section 26, T. 12 N., R. 6 E., Copper River Meridian. The occurrence is probably accurate within 500 feet.

Geologic setting

Geologic description

The prospect is in the Border Zone phase of the Pennsylvanian to Permian, Ahtell quartz monzonite pluton (Richter, 1966; Richter, Lanphere, and Matson, 1975). It is about 1/4 mile east of the contact of the pluton with rocks of the Pennsylvanian to Permian, Tetelna Formation. The deposit is a a quartz or quartz-carbonate vein that contains galena. The vein strikes north-northeast and dips 32 degrees East (Richter, fig. 5, 1966; WGM Inc., 1979).
Geologic map unit (-144.220196590981, 62.7976047388872)
Mineral deposit model Polymetallic vein (Cox and Singer, 1986; model 22c)
Mineral deposit model number 22c
Age of mineralization Emplaced subseqent to or is related to the border phase of the Pennsylvanian to Permian, Ahtell pluton.

Production and reserves

Workings or exploration Prospect pits.
Indication of production Undetermined

Additional comments

Additional information can be obtained from Ahtna Minerals in Anchorage, Alaska.

References

MRDS Number 10307494

References

Richter, D.H., Lanphere, M.A., and Matson, N.A., Jr., 1975, Granite plutonism and metamorphism, eeastern Alaska Range, Alaska: Geological Society of American Bulletin, v. 86, p. 819-820.
WGM Inc., 1979, 1978 Annual Progress Report, Uranium Exploration, Ahtell Creek Area, Volume I: WGM Inc., 39 p., appendices, 4 maps. (Report available, Ahtna Mineral Co., Anchorage, Alaska).
Reporters W.T. Ellis (Alaska Earth Sciences), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (U.S. Geological Survey)
Last report date 12/7/2000