Unnamed (northeast of upper Partin Creek)

Prospect in Alaska, United States with commodities Silver, Gold, Copper, Antimony

Geologic information

Identification information

Deposit ID 10000699
MRDS ID A011330
Record type Site
Current site name Unnamed (northeast of upper Partin Creek)
Related records 10308502

Geographic coordinates

Geographic coordinates: -149.96171, 63.06568 (WGS84)
Relative position This prospect is at an elevation of about 5,000 feet, on the northeast wall of the valley of upper Partin Creek. The map site is in the SW1/4 of sec. 25, T. 21 S., R. 13 W., of the Fairbanks Meridian. The location is known to within 0.25 mile. This is location 23 of Cobb (1978: OFR 78-1062).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Copper Primary
Antimony Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Chalcopyrite Ore
Pyrite Ore
Pyrrhotite Ore
Stibnite Ore
Quartz Gangue

Alteration

  • (Local) Formation of skarn at intrusive contacts.
  • (Local) High temperature skarn.

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Argillite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -149.96171, 63.06568

Comments on the geologic information

  • Geologic Description = The country rocks in the area of this prospect are Upper Triassic limestone and basalt cut by Upper Cretaceous or Lower Tertiary biotite-quartz diorite porphyry. The deposit consists of auriferous skarn containing pyrite, pyrrhotite, chalcopyrite, arsenopyrite, and stibnite. Gold grades are higher near the intrusive contact. Samples contain up to 0.2 ounces of gold per ton and 0.7 percent copper (Hawley and Clark, 1974).
  • Age = Probably Late Cretaceous or younger.
  • Age = Late Cretaceous or younger.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Probably inactive

Mining district

District name Valdez Creek

Comments on the workings information

  • Workings / Exploration = There has been limited exploration consisting of shallow trenches and rock chip samples.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011330
USGS Alaska Resource Data File ARDF HE062

Bibliographic references

  • Deposit

    Hawley, C.C., and Clark, A.L., 1973, Geology and mineral deposits of the upper Chulitna district, Alaska: U.S. Geological Survey Professional Paper 758-A, p. 1-10, 2 sheets, scale 1:250,000 and 1:500,000.

  • Deposit

    Hawley, C.C., and Clark, A.L., 1974, Geology and mineral deposits of the upper Chulitna district, Alaska: U.S. Geological Survey Professional Paper 758-B, p. 1-47, 2 sheets, scale 1:12,000 and 1:48,000.

  • Deposit

    Hawley, C.C., and others, 1978, Mineral appraisal of lands adjacent to Mt. McKinley National Park, Alaska. Contract No. JO166107: U.S. Bureau of Mines Open-File Report 24-78, 274 p., 12 sheets.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-1062, 113 p.

  • Deposit

    Balen, M.D., 1990, Geochemical sampling results from the Bureau of Mines Investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 plates, scale 1:250,000.

  • Deposit

    Kurtak, J.M., Southworth, D.D., Balen, M.D., and Clautice, K.H., 1992, Mineral investigations in the Valdez Creek mining district, south-central Alaska: U.S. Bureau of Mines Open-File Report 1-92, 659 p., 2 plates, scale 1:250,000.

  • Deposit

    Clark, A.L., and Cobb, E.H., 1972, Metallic mineral resources map of the Healy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-394, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Hawley and others, 1969

General comments

Subject category Comment text
Deposit Model Name = Cu skarn (Cox and Singer, 1986; model 18b)

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-2000 N. Van Wyck Stevens Exploration Management Corporation