Unnamed (near Kiwalik River)

Occurrence in Alaska, United States with commodities Tungsten, Copper, Lead

Geologic information

Identification information

Deposit ID 10308797
MRDS ID A013482
Record type Site
Current site name Unnamed (near Kiwalik River)
Related records 10002539

Geographic coordinates

Geographic coordinates: -161.48333, 65.46939 (WGS84)
Relative position Occurrence is 0.1 mile southwest of peak 1380 on Weather Ridge. The site is in section 24, T. 1 N., R. 14 W., of the Kateel River Meridian. Cobb, 1972 (MF-389), location 6, and Miller and Elliott (1969), figure 2, sample location 36.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Tungsten Primary
Copper Secondary
Lead Secondary

Materials information

Materials Type of material
Pyrite Ore
Scheelite Ore
Quartz Gangue
Tourmaline Gangue

Alteration

  • Tourmaline alteration along closely spaced fractures.

Nearby scientific data

(1) -161.48333, 65.46939

Comments on the geologic information

  • Geologic Description = This occurrence is located adjacent to the mid-Cretaceous Quartz Creek pluton, a hook-shaped, quartz monzonite body. The pluton is surrounded by a N 15 W-trending alteration zone about 18 miles long and 2 to 5 miles wide. The alteration zone is in Jurassic-Cretaceous andesitic volcanic rocks, and is marked by carbonate-quartz replacement, and tourmaline. Fine-grained dikes of varying composition cut the andesites near the pluton. Dikes near the Quartz Creek pluton are locally mineralized. At this occurrence, disseminated scheelite occurs in pyrite-tourmaline-quartz vein material in frost-riven rubble near the contact between andesite and quartz monzonite. A grab sample from location 36 contained 500 ppm Cu, 150 ppm Pb, and greater than 1% W (Miller and Elliott, 1969).
  • Age = Mid-Cretaceous or younger.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairhaven

Comments on the workings information

  • Workings / Exploration = The area has been mapped by the U.S. Geological Survey and examined by various exploration companies.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF CA019
USGS Mineral Resources Data System MRDS A013482
USGS Mineral Resources Data System MRDS D002612

Bibliographic references

  • Deposit

    Miller, T.P., and Elliott, R.L., 1969, Metalliferous deposits near Granite Mountain, eastern Seward Peninsula, Alaska: U.S. Geological Survey Circular 614, 19 p.

  • Deposit

    Cobb, E.H., 1975, Tungsten occurrences in Alaska: U.S. Geological Survey Mineral Investigations Resource Map MR-66, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Miller and Elliott, 1969

General comments

Subject category Comment text
Deposit Model Name = Scheelite in pyrite-tourmaline-quartz veins.
Deposit Other Comments = This site is one of numerous occurrences of argentiferous galena, sphalerite, pyrite and arsenopyrite in an 18-mile-long, 2- to 5-mile-wide zone of altered andesite surrounding the Quartz Creek quartz monzonite pluton. The altered zone trends N 15 W, across the drainage basins of Quartz Creek and the Kiwalik River.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-JAN-00 Williams, Anita U.S. Geological Survey