The Esperanza 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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Esperanza Creek MRDS details
Site Name
Primary: Esperanza Creek
Commodity
Primary: Gold
Location
State: Alaska
District: Fairhaven
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 (Workings): Workings / Exploration = Small surface placer mine workings are probably present; probably mostly accomplished by hand.
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Cobb, 1975 (OFR 75-429)
Comment (Deposit): Model Name = Placer Au-PGE (Cox and Singer, 1986; model 39a)
Comment (Geology): Geologic Description = Gold was discovered on Esperanza Creek in 1907-1908 (Smith, 1909). Gold is present in the narrow main channel where gravels are exposed between muck banks. The exact location of this discovery and the small amount of mining is not known. It is assumed to be along the lower part of the creek where the stream valley is narrow. There is extensive surficial cover in this area and bedrock, exposed locally on uplands, is mostly part of a schistose impure marble assemblage of probable Paleozoic age( Sainsbury, 1975; Till and others, 1986) . At least part of this bedrock assemblage is probably equivalent to Ordovician impure marble known elsewhere on Seward Peninsula (Till and others, 1986). Quaternary/Tertiary basalt flows locally cap the valley walls in this area.
Comment (Geology): Age = Quaternary
References
Reference (Deposit): Sainsbury, C.L., 1975, Geology, ore deposits, and mineral potential of the Seward Peninsula, Alaska: U.S. Bureau of Mines Open-File Report 73-75, 108 p., 3 sheets, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Bendeleben quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-417, 1 sheet, scale 1:250,000.
Reference (Deposit): Smith, P.S., 1909, Recent developments in southern Seward Peninsula: U.S. Geological Survey Bulletin 379-F, p. 267-301.
Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bendeleben quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-429, 123 p.
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