The Beaver is a 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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Beaver MRDS details
Site Name
Primary: Beaver
Commodity
Primary: Zinc
Secondary: Lead
Location
State: Alaska
District: McGrath
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: Mississippi Valley, S.E. Missouri Pb-Zn
Model Name: Mississippi Valley, updated
Model Name: Mississippi valley, without Missouri
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: White vuggy dolomite; galena to oxidized cerrusite.
Rocks
Role: Host
Age Type: Host Rock
Age Young: Late Silurian
Age Old: Early Ordovician
Analytical Data
Not available
Materials
Ore: Smithsonite
Ore: Galena
Ore: Cerussite
Gangue: Dolomite
Comments
Comment (Workings): Workings / Exploration = The Beaver prospect was discovered by WGM Inc. and Patino Ltd. during exploration for base metals on lands in the 'Reef Ridge district.' Sporadic surface investigations were continued by Pasminco Ltd. until about 1989. Grab samples from cerussite-rich gossan contain up to 32.7 percent zinc and 34.5 percent lead. A continuous trench sample that was composed of about 80 percent gossan contained 19.25 percent zinc and 0.90 percent lead over a 40 feet (12 m) channel interval (Schmidt, 1997).
Comment (Geology):
Comment (Geology): Geologic Description = (Schmidt, 1997).
Comment (Reference): Primary Reference = Schmidt, 1997
Comment (Commodity): Gangue = ferrigenous gossan
Comment (Deposit): Model Name = Southeast Missouri Pb-Zn (Cox and singer, 1986; model no. 32a) or Mississippi Valley Type
Comment (Geology): Age = Host rock is Ordovician-Silurian, based on fossils in host unit (Blodgett, 1982); however, the age of the mineralization is unknown.
Comment (Deposit): Other Comments = See Bermuda (MD045), Hillside (MD049), and Big Gate (MD050) Mississippi Valley Type occurrences in Medfra B-3 quadrangle.
Comment (Exploration): Status = Inactive
Comment (Commodity): Gangue = secondary carbonate
References
Reference (Deposit): Schmidt, J.M., 1997, Shale-hosted Zn-Pb-Ag and barite deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska, 1997: Economic Geology Monograph 9, p. 35-65.
Reference (Deposit): Anderson, G.M., and Macqueen, R.W., 1988, Mississippi Valley Type lead-zinc deposits, in Roberts, R.G., and Sheahan, P.A., eds., Ore deposit models: Geoscience Canada Reprint Series 3, Ottawa, Canada, p. 79-90.
Reference (Deposit): Dutro, T.T. Jr., and Patton,W.W. Jr., 1982, New Paleozoic Formations in the northern Kuskokwim Mountains, west-central Alaska: U.S. Geological Survey Bulletin 1529-H, p. H13-H22.
Reference (Deposit): Blodgett, R.B., 1982, Stratigraphy of Reef Ridge project area: WGM Inc., Anchorage, Alaska, Reef Ridge Project area, Block 10, Doyon region: 34 pages.
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