The Tak II is a iron and copper 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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Tak II MRDS details
Site Name
Primary: Tak II
Commodity
Primary: Iron
Primary: Copper
Location
State: Alaska
District: Bristol Bay
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
Model Name: Skarn Cu
Model Name: Skarn Fe
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Unknown
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Geology): Age = Mineralization is Tertiary or younger. The quartz monzodiorite which is probably the source of the skarn yields concordant potassium-argon ages for hornblende and biotite of about 61 m.y. (Reed and Lanphere, 1972; 1973). Potassium-argon ages for the volcanic rocks range from 56.2 to 62.7 m.y. (Eakins and others, 1978).
Comment (Exploration): Status = Inactive
Comment (Production): Production Notes = No production
Comment (Reference): Primary Reference = U.S. Bureau of Mines, 1973
Comment (Reserve-Resource): Reserves = No reserves
Comment (Workings): Workings / Exploration = Unknown
Comment (Deposit): Model Name = Fe skarn ? or Cu skarn ? (Cox and Singer, 1986; model 18d ? or 18b ?)
Comment (Deposit): Other Comments = Site is in Lake Clark National Park and Preserve.
Comment (Geology): Geologic Description = Occurrence identified by 58 lode iron claims (U.S. Bureau of Mines, 1973). MacKevett and Holloway (1977) reported that the occurrence may be in mineralized zones of contact-metamorphosed Upper Triassic limestone and dolomite that has been intruded by Tertiary, medium- to fine-grained hornblende-biotite quartz monzodiorite (Nelson and others, 1983; unit Ti2). The pluton yields concordant potassium-argon ages for hornblende and biotite of about 61 m.y. (Reed and Lanphere, 1972; 1973). Other nearby rocks include Tertiary volcanic rocks, which include rhyolitic breccia, ash-flow tuff, flows, felsic intrusive rocks, and subordinate mafic to intermediate flows (Nelson and others, 1983; unit Tv). Potassium-argon ages for Unit Tv range from 56.2 to 62.7 m.y. (Eakins and others, 1978).
References
Reference (Deposit): Nelson, W.H., Carlson, C., and Case, J.E., 1983, Geologic map of the Lake Clark quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1114-A, scale 1:250,000.
Reference (Deposit): Reed, B.L., and Lanphere, M.A., 1972, Generalized geologic map of the Alaska-Aleutian range batholith showing potassium-argon ages of the plutonic rocks: U.S. Geological Survey Miscellaneous Field Studies Map MF-372, 2 sheets, scale 1:1,000,000.
Reference (Deposit): Eakins, G.R., Gilbert W.G., and Buntzen, T.K., 1978, Preliminary bedrock geology and mineral resource potential of west-central Lake Clark quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Open-File Report 118, 15 p.
Reference (Deposit): U.S. Bureau of Mines, 1973, Alaska 1:250,000-scale quadrangle map overlays showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, 95 overlays (updated in 1986, 1987).
Reference (Deposit): Reed, B. L., and Lanphere, M. A., 1973, Alaska-Aleutian Range batholith-- Geochronology, chemistry, and relation to circum-Pacific plutonism: Geological Society of America Bulletin, v. 84, no. 8, p. 2583-2610.
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
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