Snow Bird

Prospect in Alaska, United States with commodities Silver, Copper

Geologic information

Identification information

Deposit ID 10001031
MRDS ID A011708
Record type Site
Current site name Snow Bird
Related records 10186042

Geographic coordinates

Geographic coordinates: -142.51553, 61.39468 (WGS84)
Relative position 2,900 ft north-northeast of the headwaters of Boulder Creek - a tributary of Dan Creek. Best location: MacKevett, 1974. Accurate within radius of 100 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 87
USGS model code 23
BC deposit profile D03
Deposit model name Basaltic Cu (BC name is Volcanic redbed Cu)
Mark3 model number 118

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
    Rock unit name Nikolai Greenstone
    Rock description Nikolai Greenstone
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -142.51553, 61.39468

Comments on the geologic information

  • Geologic Description = Quartz-calcite vein 0.5-1.5 m thick containing bornite, chalcocite, chalcopyrite and pyrite, in Triassic Nikolai Greenstone.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Nizina

Comments on the workings information

  • Workings / Exploration = Explored by two short adits. Sample of bornite-rich pod assayed: 50 ppm Ag (MacKevett and Smith, 1968).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011708
USGS Alaska Resource Data File ARDF MC080

Bibliographic references

  • Deposit

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

  • Deposit

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

  • 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.

  • Deposit

    MacKevett, E.M., Jr., 1974, Geologic map of the McCarthy B-5 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1146, scale 1:63,360.

  • 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.

  • Deposit

    Moffit, F.H., 1918, Mining in the lower Copper River basin, in U.S. Geological Survey Staff, Mineral resources of Alaska, report on progress of investigations in 1916: U.S. Geological Survey Bulletin 662, p. 155-182.

Comments on the references

  • Primary Reference = Moffit, 1918; MacKevett and Smith, 1968

General comments

Subject category Comment text
Deposit Model Name = Basaltic Cu

Reporter information

Type Date Name Affiliation Comment
Reporter 12-NOV-1997 Leonard, K.R. U.S. Geological Survey
Reporter 12-NOV-1997 Elliott, R.L. U.S. Geological Survey
Reporter 12-NOV-1997 Richter, D.H. U.S. Geological Survey