The Natural Arches (north of Bering Glacier) is a copper 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
Satelite View
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.
Natural Arches (north of Bering Glacier) MRDS details
Site Name
Primary: Natural Arches (north of Bering Glacier)
Commodity
Primary: Copper
Location
State: Alaska
District: Yakataga
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: Basaltic Cu (BC name is Volcanic redbed Cu)
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Oxidation.
Rocks
Role: Host
Age Type: Host Rock
Age Young: Eocene
Age Old: Paleocene
Analytical Data
Not available
Materials
Ore: Copper
Ore: Malachite
Ore: Azurite
Gangue: Quartz
Comments
Comment (Geology): Age = Tertiary. The mineralization postdates the Early Tertiary age of the host volcanic rocks.
Comment (Reference): Primary Reference = Brabb and Miller, 1962
Comment (Workings): Workings / Exploration = Reconnaissance surface observations have been completed at this locality (Brabb and Miller, 1962).
Comment (Geology): Geologic Description = At this occurrence, native copper occurs in mafic volcanic rocks, and azurite and malachite occur in quartz veins that cut the volcanic rocks (Brabb and Miller, 1962). The volcanic rocks are part of the Lower Tertiary Orca Group (Hudson and Plafker, 1982).
Comment (Deposit): Model Name = Native copper in mafic volcanic rocks.
Comment (Deposit): Other Comments = This occurrence is very close to the southern boundary of the Wrangell-St. Elias National Park.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Bering Glacier quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-373, 1 sheet, scale 1:250,000.
Reference (Deposit): Brabb, E.E., and Miller, D.J., 1962, Reconnaissance traverse across the eastern Chugach Mountains, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-341, scale 1:96,000.
Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bering Glacier, Icy Bay, Middleton Island, and Yakutat quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-1246, 41 p.
Reference (Deposit): Hudson, T.L., and Plafker, George, 1982, Paleogene metamorphism of an accretionary flysch terrane, eastern Gulf of Alaska: Geological Society of America Bulletin, v. 93, p. 1280-1290.
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
