Otter Creek

The Otter Creek is a silver and 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: Otter Creek

Commodity

Primary: Silver
Primary: Gold
Secondary: Tin
Secondary: Mercury
Secondary: Lead
Secondary: Tungsten
Secondary: Antimony
Secondary: Chromium

Location

State: Alaska
District: Iditarod

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: 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: Cassiterite
Ore: Chromite
Ore: Cinnabar
Ore: Galena
Ore: Gold
Ore: Scheelite
Ore: Stibnite

Comments

Comment (Deposit): Other Comments = Stream gradient under 100 ft. per mile. Glen Gulch placers included with Otter Creek.

Comment (Geology): Age = Tertiary/Quaternary

Comment (Deposit): Model Name = Placer: stream, bench

Comment (Exploration): Status = Active

Comment (Reference): Primary Reference = Bundtzen and others, 1992

Comment (Geology): Geologic Description = Gold is deposited in both terrace and modern stream channels from Granite Creek about 5 miles to Flat. Most coarse gold is deposited on and in cracks in monzonite bedrock near discovery. Gold lowers in grade progressively downstream. Overburden is 10-18 ft. thick; 2-6 ft. of gravel overlain by 4-12 ft. of frozen muck. Top 2-6 ft of bedrock was taken up to recover gold in crevices.

Comment (Workings): Workings / Exploration = Surface: dredging

Comment (Production): Production Notes = Production 1915-86 estimated at 235,721 oz. Au and 31,408 oz. Ag. Dredge operated 1915-56.

References

Reference (Deposit): Bundtzen, T.K., Miller, M.L., Laird, G.M., and Bull, K.F., 1992, Geology and mineral resources of Iditarod mining district, Iditarod B-4 and eastern B-5 quadrangles, southwestern Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 97, 46 p., 2 sheets, scale 1:63,360.

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction material) in the Iditarod and Ophir quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-576, 101 p.

Reference (Deposit): Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.

Reference (Deposit): Maloney , R.P., 1962, Trenching and sampling of the Rhyolite mercury prospect, Kuskokwim River basin, Alaska: U.S. Bureau of Mines Report of Investigations 6141, 43 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Iditarod quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-363, 1 sheet, scale 1:250,000.

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