The Unnamed (Blue Mouse Cove) is a lead and zinc 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 (Blue Mouse Cove) MRDS details
Site Name
Primary: Unnamed (Blue Mouse Cove)
Commodity
Primary: Lead
Primary: Zinc
Secondary: Silver
Location
State: Alaska
District: Juneau
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: Arsenopyrite
Ore: Galena
Ore: Sphalerite
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Deposit): Model Name = Low-sulfide quartz-calcite veins.
Comment (Deposit): Other Comments = Veins are possible distal structures related to Cretaceous or younger magmatism. Because of their strength and type of mineralization, they deserve more work. ? the site is in Glacier Bay National Park and Preserve.
Comment (Geology): Geologic Description = The area is underlain by granodiorite and quartz diorite of Cretaceous age, separated from other granite by a strong fault of northwest strike about 0.5 mile west of the occurrence (Brew and others, 1978, pl. 1A). Mineralization occurs in steep faults and shear zones that strike east-northeast strike and locally contain andesite dikes. MacKevett and others (1971, table 9) reported quartz-calcite veins as much as 1.5 feet thick within a 12-foot-thick shear zone. A 2-foot sample contained 1 ppm silver, 200 ppm copper, 300 ppm lead, and 700 ppm zinc. Bureau of Mines samples of a second zone contained as much as 7 ppm silver, 680 ppm zinc, 220 ppm lead and 3000 ppm arsenic (Kimball and others, 1978, p. C248-249). Two or more vein zones are inferred by Kimball and others (1978); the one they sampled is at least 1000-feet long.?The vein zone was at least 1000 feet long. ? the presence of weak lead-zinc values, and anomalous amounts of silver in quartz-calcite vein, suggests that the veins are distal structures related, generally, to Cretaceous or younger intrusive activity.
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Probably Cretaceous.
Comment (Workings): Workings / Exploration = There are no workings. A Geological Survey selected 2-foot sample contained 1 ppm silver, 200 ppm copper, 300 ppm lead, and 700 ppm zinc (MacKevett and others (1971, table 9). The sample reported by Kimball and others (1978) from about the same locality contained 3000 ppm arsenic, 7 ppm silver, 220 ppm lead, and 680 ppm zinc. The vein sampled by the Bureau of Mines is projected for more than 1000 feet.
Comment (Reference): Primary Reference = MacKevett and others, 1971; Kimball and others, 1978
References
Reference (Deposit): Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Mount Fairweather quadrangle, AK: U.S. Geological Survey Miscellaneous Field Study Map MF-436, 1 sheet, scale 1:250,000.
Reference (Deposit): MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.
Reference (Deposit): Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p.
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