Silver Dick and Jennie claims

Prospect in Alaska, United States with commodities Silver, Copper

Geologic information

Identification information

Deposit ID 10002262
MRDS ID A013165
Record type Site
Current site name Silver Dick and Jennie claims

Geographic coordinates

Geographic coordinates: -136.65018, 58.93583 (WGS84)
Relative position The occurrence is about 30 feet above high tide on the west side of Rendu Inlet, about 3 miles above the mouth and 0.25 miles north of VABM Grey. The location of workings that date back to the 1890s was described by Rossman (1963-B 1121-K); it is probably accurate within 0.2 mile. It is location number 31 of Cobb (1972).
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Secondary

Comments on the commodity information

  • Ore Material = Silver (native)

Materials information

Materials Type of material
Silver Ore
Tetrahedrite Ore
Ankerite Gangue
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) 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.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

(1) -136.65018, 58.93583

Comments on the geologic information

  • 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.
  • Age = Cretaceous.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Juneau

Comments on the production information

  • Production Notes = Possibly some hand-picked silver ore was mined in the 1890s.

Comments on the workings information

  • 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.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013165
USGS Alaska Resource Data File ARDF MF054

Bibliographic references

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

Comments on the references

  • Primary Reference = Rossman, 1963 (B 1121-K)

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide silver-copper-bearing vein.
Deposit Other Comments = Paleozoic terrane; nearby intrusions of Cretaceous age. The occurrence is in Glacier Bay National Park and Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-APR-99 Hawley, C.C. Hawley Resource Group