Slope Creek

The Slope Creek is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Slope Creek

Commodity

Primary: Gold
Secondary: Copper
Secondary: Bismuth
Secondary: Silver

Location

State: Alaska
District: Chistochina

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Placer Au-PGE

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Bismuth
Ore: Copper
Ore: Gold
Ore: Silver
Gangue: Barite
Gangue: Magnetite

Comments

Comment (Deposit): Other Comments = See also Grubstake Creek (GU017) and Boulder Creek (GU016).

Comment (Production): Production Notes = Placer deposits in Slope and Grubstake Creeks (GU017) have been mined intermittently since 1934. Total production from both is probably less than $30,000 (about 857 ounces) (Richter and Matson, 1968).

Comment (Exploration): Status = Inactive

Comment (Deposit): Model Name = Placer Au (Cox and Singer, 1986; model 39a)

Comment (Workings): Workings / Exploration = Small-scale placer mining took place from about 1934 to the 1950's, and possibly more recently.

Comment (Geology): Geologic Description = Slope Creek has produced a small amount of placer gold that probably was derived from low-grade porphyry and vein deposits in upper Slope Creek (GU 020). The placer gold is accompanied by magnetite, native silver, native bismuth, native copper, and possibly barite (Moffit, 1944; Richter, 1966). As in Grubstake Creek (GU017) which is over the divide to the west, the gold is fine-grained and wiry, which suggests a short distance of transport (Richter and Matson, 1968).

Comment (Reference): Primary Reference = Richter, 1966; Richter and Matson, 1968

Comment (Geology): Age = Holocene placer.

References

Reference (Deposit): Richter, D.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Gulkana quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-419, 1 sheet, scale 1:250,000.

Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Gulkana quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1247, 36 p.

Reference (Deposit): WGM Inc., 1980, 1979 Summary report of gold potential, Slana District, Ahtna project: WGM Inc., 10 p., 1:63,360-scale map. (Report held by Ahtna Mineral Co., Anchorage, Alaska).

Reference (Deposit): Nokleberg, W.J., and others, 1994, Metallogeny and major mineral deposits of Alaska and Metallogenic map of significant metalliferous lode deposits and placer districts of Alaska, in Plafker, G. and Berg, H.C., eds., The Geology of Alaska: Boulder, Colorado, Geological Society of America: The Geology of North America, v. G1, p. 855-904 and v. G1, Plate 11, scale 1:2,500,000.

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Moffit, F.H., 1944, Mining in the northern Copper River region, Alaska: U.S. Geological Survey Bulletin 943, p. 25-47.

Reference (Deposit): Richter, D.H., 1966, Geology of the Slana district on south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 2l, 36b p., 3 sheets, scale 1:63,360.

Reference (Deposit): Richter, D.H., and Matson, N.A., 1968, Distribution of gold and some base metals in the Slana area, eastern Alaska Range, Alaska: U.S. Geological Survey Circular 593, 20 p.

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