The Rambler is a gold 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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Rambler MRDS details
Site Name
Primary: Rambler
Secondary: Challenger
Commodity
Primary: Gold
Secondary: Silver
Secondary: Lead
Secondary: Zinc
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
Model Name: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Narrow alteration envelopes reported by MacKevitt and others (1971).
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Arsenopyrite
Ore: Galena
Ore: Pyrite
Ore: Sphalerite
Ore: Gold
Gangue: Barite
Gangue: Calcite
Gangue: Feldspar
Gangue: Quartz
Comments
Comment (Deposit): Other Comments = the area is often snow covered. It has potential for further discovery. The Rambler vein area is in Glacier Bay National Park and Preserve.
Comment (Geology): Geologic Description = The Rambler vein area crops out on the east side of Lamplugh Glacier in an area underlain principally by granodiorite of Cretaceous age that encloses subordinate inclusions of metasedimentary rock. The granodiorite is cut by mafic dikes of northeast strike (MacKevett and others, 1971, p. 64). A major fault of north-northwest strike underlies and determines the linear course of Lamplugh Glacier (Brew and others, 1978); motion on that fault could have been important in opening the Rambler and nearby veins of northeast to east strike. As mapped by Rossman (1959, B 1058-B, pl. 4), the Rambler is in a vein swarm. The Rambler vein, of nearly east strike, is as much as 3-feet thick; most other veins strike about N. 60 E., pinch and swell characteristically and are traceable for 200-feet or less. The Rambler vein is pyritic; other veins, exposed or as float, contain arsenopyrite, galena, sphalerite, and sparse free gold. Of seven samples collected in the area and reported in MacKevett and others (1971, table 11), all except one contained at least 0.015 oz/ton gold. Maximum assay was 0.263 ounce per ton gold. Sampling by the Bureau of Mines (Kimball and others, 1978, p. C231) of short narrow high grade vein segments near Rambler contained as much as 6.45 ounce per ton gold in a narrow (about 0.35 foot) vein segment. Quartz, calcite, barite and feldspars are reported as vein minerals (MacKevett and others, 1971, p. 64).
Comment (Workings): Workings / Exploration = The initial discovery was made by Joe Ibach before 1940. Four claims were located in 1936.
Comment (Reference): Primary Reference = Rossman, 1959 (B 1058-B); MacKevett and others, 1971; Kimball and others, 1978
Comment (Reserve-Resource): Reserves = No reserves; several veins in swarm may have potential.
Comment (Geology): Age = Late Cretaceous or younger.
Comment (Exploration): Status = Inactive
Comment (Commodity): Ore Material = Gold (native)
Comment (Deposit): Model Name = Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).
References
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): 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.
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): Rossman, Darwin, 1959, Geology and ore deposits in the Reid Inlet area, Glacier Bay, Alaska: U.S. Geological Survey Bulletin 1058-B, p. 33-58.
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.
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