The Silver Dick and Jennie claims is a silver 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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Silver Dick and Jennie claims MRDS details
Site Name
Primary: Silver Dick and Jennie claims
Commodity
Primary: Silver
Secondary: Copper
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: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Rossman (1963, B 1121-K, p. K48) reports 'the country rock is extensively altered on each side of the fault [vein]', also that similar alteration is widespread. Rossman does not describe the alteration, but it likely is partly ankeritic.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Tetrahedrite
Ore: Silver
Gangue: Ankerite
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Exploration): Status = Inactive
Comment (Deposit): Model Name = Low-sulfide silver-copper-bearing vein.
Comment (Geology): Age = Cretaceous.
Comment (Reference): Primary Reference = Rossman, 1963 (B 1121-K)
Comment (Geology): Geologic Description = The deposit occurs in a hornfels- and marble-rich section of post-Silurian Paleozoic age, south of a large granite mass of Cretaceous age (Brew and others, 1978). Copper and silver minerals are associated with ankeritic quartz veins as much as 6 inches thick. The occurrence is in a north striking, west dipping vein that can be traced for several hundred feet on trend and about 100-ft vertically (Rossman, 1963, p. K48-49). Wire silver and tetrahedrite were found in veinlets in quartz at the property. MacKevett and others (1971, p. 69) reported barren ankerite-quartz and quartz-calcite veins in the same area. One ankeritic vein was described on the contact between marble and a 20-ft wide dioritic dike.
Comment (Deposit): Other Comments = Paleozoic terrane; nearby intrusions of Cretaceous age. The occurrence is in Glacier Bay National Park and Preserve.
Comment (Workings): Workings / Exploration = The deposit was discovered about 1893 and two claims were patented in 1894. A sixty-five foot adit was driven on the Silver Dick claim; there were trenches on both claims (Kimball, and others 1978, p. C187-188). Landslides and rock falls have apparently partly covered the old prospect area.
Comment (Commodity): Ore Material = Silver (native)
Comment (Production): Production Notes = Possibly some hand-picked silver ore was mined in the 1890s.
References
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): 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): Rossman, Darwin, 1963, Geology of the eastern part of the Mount Fairweather quadrangle, Glacier Bay, Alaska: U.S. Geological Survey Bulletin 1121-K, p. K1-K57.
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): 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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