Eldorado Creek

The Eldorado 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: Eldorado Creek

Commodity

Primary: Gold
Secondary: Silver

Location

State: Alaska
District: Innoko

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: Gold

Comments

Comment (Geology): Geologic Description = The bedrock along the lower part of Eldorado Creek is volcanic; the upper part is underlain by chert, argillite, and volcaniclastic rocks. A Cretaceous or Tertiary monzonite pluton intrudes the strata in the uppermost part of the creek (Chapman and others, 1987). The monzonite contains large feldspar phenocrysts and stockwork quartz veining and is heavily weathered at the surface to quartz and feldspar (S. Dashevsky, written commun., 2000). This monzonite pluton is the likely source of the gold in Eldorado Creek (Bundtzen and others, 1987). Roehm (1937) documents prospecting at an open cut along Eldorado Creek, groundsluicing at its mouth, and prospecting at the head of the creek. Also see OP008-012.

Comment (Geology): Age = Quaternary. The source of the gold at Eldorado Creek may be the Cretaceous or Tertiary monzonite pluton exposed near the headwaters of the creek (Bundtzen and others, 1987).

Comment (Reference): Primary Reference = Roehm, 1937

Comment (Workings): Workings / Exploration = Roehm (1937) documents prospecting at an open cut along Eldorado Creek, groundsluicing at its mouth, and prospecting at the head of the creek.

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

References

Reference (Deposit): Roehm, J.C., 1937, Summary report of mining investigations in the Innoko, Mt. McKinley, Knik, and Talkeetna precincts: Alaska Territorial Department of Mines Itinerary Report 195-17, 16 p.

Reference (Deposit): Bundtzen, T.K., Green, C.B., Deagen, J., and Daniels, C.L., 1987, Alaska's mineral industry, 1986: Alaska Division of Geological and Geophysical Surveys, Special Report 40, 68 p.

Reference (Deposit): Chapman, R.M., Patton, W.W., and Moll, E.J., 1985, Reconnaissance geologic map of the Ophir quadrangle, Alaska: U.S. Geological Survey Open-File Report 85-203, 1 sheet, 1:250,000 scale.

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