The Unnamed (Bristol Bay coast north of Ugashik Bay) 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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Unnamed (Bristol Bay coast north of Ugashik Bay) MRDS details
Site Name
Primary: Unnamed (Bristol Bay coast north of Ugashik Bay)
Commodity
Primary: Gold
Secondary: Iron
Secondary: Titanium
Location
State: Alaska
District: Alaska Peninsula
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
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
Ore: Ilmenite
Ore: Magnetite
Comments
Comment (Geology): Age = Quaternary.
Comment (Exploration): Status = Inactive
Comment (Deposit): Model Name = Placer gold-PGE (Cox and Singer, 1986; model 39a)
Comment (Reference): Primary Reference = Kimball, 1972
Comment (Workings): Workings / Exploration = The U.S. Bureau of Mines drilled 21 holes in these deposits in 1969 (Kimball, 1972). Of 125 samples, 89 contained trace to 0.007 ounce of gold per ton.
Comment (Geology): Geologic Description = This site represents black sand beach placer deposits tested by the U.S. Bureau of Mines in 1969 (Kimball, 1972). The beach consists of silt to large boulder-sized detritus. The coarser material is mostly of igneous origin, and is thought to have been transported from the Aleutian Range. The finer material consists mostly of quartz and feldspar.? Black sand occurs as a veneer, generally forming thin layers or lenses, that covers wide sections of the upper part of the beach. These layers or lenses rarely exceed 6 inches thick, but one layer measured 14 inches. Buried layers were generally of the same thickness. Some of the black sand lenses are up to a 100 feet long, but most are short and narrow, and rarely cover an acre. A magnetic survey failed to detect any large buried bodies of black sand. Magnetite and ilmenite are abundant in the black sands, however hypersthene is the dominant mineral.? the U.S. Bureau of Mines drilled 21 holes along 13 miles of this beach. Hole depths ranged from 2 to 4 feet. They collected 125 samples, 89 of which contained trace to 0.007 ounce of gold per ton.
Comment (Deposit): Other Comments = This occurrence is on state land.
References
Reference (Deposit): Kimball, A.L., 1972, Reconnaissance of Ugashik beach sands, Bristol Bay, Alaska: U.S. Bureau of Mines Open-File Report 21-72, 28 p.
Reference (Deposit): Church, S.E., Detterman, R.L., and Wilson, F.H., 1989, Mineral and energy resource assessment maps of the Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-I, 2 map sheets, scale 1:250,000.
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Cobb, E.H., 1980, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and west-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.
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