The McRoberts Creek is a mercury and tungsten 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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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
McRoberts Creek MRDS details
Site Name
Primary: McRoberts Creek
Commodity
Primary: Mercury
Primary: Tungsten
Location
State: Alaska
District: Anchorage
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Cinnabar
Ore: Magnetite
Ore: Pyrite
Ore: Scheelite
Ore: Ilmenite
Comments
Comment (Workings): Workings / Exploration = Pan concentrates contain 50 to 60 percent magnetite, less than 1 percent scheelite, about 1 percent pyrite, a few grains of ilmenite, and 1 grain of cinnabar (Jasper, 1967).
Comment (Reference): Primary Reference = Jasper, 1967
Comment (Deposit): Other Comments = It appears that McRoberts Creek has also been referred to as Bodenburg Creek and Palmer Creek on various maps.
Comment (Geology): Geologic Description = Jasper (1967) reported creek float consisting of granite, greenstone and ultramafic rocks. Concentrates include: magnetite, scheelite, pyrite, ilmenite, and a trace of cinnabar.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 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 Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.
Reference (Deposit): Jasper, M.W., 1967, Geochemical investigations along the Valdez to Chitina Highway, south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geochemical Report 15, 33 p.
Reference (Deposit): Cobb, E.H., 1975, Tungsten occurrences in Alaska: U.S. Geological Survey Mineral Investigations Resource Map MR-66, 1 sheet, scale 1:250,000.
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