Unnamed (head of Dan Creek)

Prospect in Alaska, United States with commodities Silver, Copper

Geologic information

Identification information

Deposit ID 10001023
MRDS ID A011696
Record type Site
Current site name Unnamed (head of Dan Creek)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -142.43746, 61.37274 (WGS84)
Relative position Near headwaters of Dan Creek - 4,000 ft east-southeast of Nikolai Butte. Best location: MacKevett and Smith, 1972. 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
Chalcocite Ore
Chalcopyrite Ore
Covellite Ore
Malachite Ore

Alteration

  • (Local) Oxidation of Cu minerals.

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
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -142.43746, 61.37274

Comments on the geologic information

  • Geologic Description = Scattered veins up to 5 cm wide along joints in Triassic Nikolai Greenstone contain chalcocite, pyrrhotite, covellite and malachite.

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 = 15 ft adit. Grab sample assayed: 30 ppm Ag and >20,000 ppm Cu (MacKevett, 1976).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011696
USGS Alaska Resource Data File ARDF MC164

Bibliographic references

  • 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., 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.

  • 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.

Comments on the references

  • Primary Reference = MacKevett and Smith, 1968

General comments

Subject category Comment text
Deposit Model Name = Basaltic Cu

Reporter information

Type Date Name Affiliation Comment
Reporter 07-NOV-97 Leonard, K.R. U.S. Geological Survey
Reporter 07-NOV-97 Elliott, R.L. U.S. Geological Survey
Reporter 07-NOV-97 Richter, D.H. U.S. Geological Survey