Nelson

The Nelson is a 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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Site Name

Primary: Nelson

Commodity

Primary: Copper
Secondary: Silver

Location

State: Alaska
District: Nizina

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Basaltic Cu (BC name is Volcanic redbed Cu)

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Copper
Ore: Bornite
Ore: Chalcocite
Ore: Chalcopyrite
Ore: Covellite
Ore: Enargite
Ore: Malachite
Gangue: Calcite
Gangue: Pyrite
Gangue: Dolomite

Comments

Comment (Geology): Age = Cretaceous

Comment (Exploration): Status = Inactive

Comment (Commodity): Ore Material = Copper (native)

Comment (Geology): Geologic Description = Prospect lies on NE limb of a broad NW-trending syncline cut by two major faults: a thrust fault striking about N 45 W and dipping SW along which the Nikolai Greenstone has overridden a section of Chitistone Limestone; and a high-angle normal fault striking about N 25 E. Stringers and discontinuous masses of disseminated to massive chalcocite and covellite and minor enargite, bornite, chalcopyrite, malachite, and native copper as replacements of limestone and dolomite along steeply inclined narrow fissures and bedding planes. Prospect is in near-basal part of a faulted block of Upper Triassic Chitistone Limestone. Local faulting and shearing.

Comment (Production): Production Notes = Minor production 1929-1930.

Comment (Reference): Primary Reference = Bateman, 1932

Comment (Workings): Workings / Exploration = Explored by surface pits and 5 short adits on 4 levels. About 1,100 ft of underground workings driven between 1929 and 1930; 3 adits were still accessible in 1951. Also explored by diamond drilling. Chip samples across massive sulfide veins assayed > 2 percent Cu, 0.3 percent As, 50 ppm Ag, (MacKevett and Smith, 1968). Type of workings: Surface and underground

Comment (Commodity): Ore Material = unknown Ag minerals.

Comment (Commodity): Ore Material = unknown Ag minerals.

Comment (Deposit): Other Comments = See also: Radovan (MC160- MC078) and Kennicott (MC003) deposits.

Comment (Deposit): Model Name = Basaltic Cu

References

Reference (Deposit): MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, scale 1:250,000.

Reference (Deposit): MacKevett, E.M., Jr., and Smith, J.G., 1972, Geologic map of the McCarthy B-4 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-943, scale 1:63,360.

Reference (Deposit): MacKevett, E.M., Jr., and Smith, J.G., 1968, Distribution of gold, copper, and some other metals in the McCarthy B-4 and B-5 quadrangles, Alaska: U.S. Geological Survey Circular 604, 25 p.

Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

Reference (Deposit): Sainsbury, C.L., 1952, Geology of the Nelson and Radovan copper prospects, Glacier Creek, Alaska: U.S. Geological Survey Open-File Report 61, 18 p.

Reference (Deposit): Bateman, A.M., 1932, Notes on a Kennecott-type copper deposit, Glacier Creek, Alaska: Economic Geology, v. 27, p. 297-306.

Reference (Deposit): Miller, D.J., 1946, Copper deposits of the Nizina district, Alaska: U.S. Geological Survey Bulletin 947F, p. 93-120.

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