Sourdough Creek

Prospect in Alaska, United States with commodities Gold, Antimony, Tin, Tungsten

Geologic information

Identification information

Deposit ID 10308818
MRDS ID A012222
Record type Site
Current site name Sourdough Creek
Related records 10001473, 10111573

Geographic coordinates

Geographic coordinates: -146.47596, 65.3297 (WGS84)
Relative position The location is the approximate center of discontinuous placer workings that extend from Silver Creek to Polar Creek; from the mouth of Bear Creek upstream for about 1,500 ft; and for about a mile between Bear Creek and Ruby Creek. Sourdough Creek is a tributary of the Chatanika River. The creek can be accessed from the Steese Highway at mile marker 66.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Antimony Secondary
Tin Secondary
Tungsten Secondary

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore
Scheelite Ore
Stibnite Ore

Mineral occurrence model information

Model code 119
USGS model code 39a
BC deposit profile C01. C02
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -146.47596, 65.3297

Comments on the geologic information

  • Geologic Description = Bedrock in the area is schist,and, near the mouth of the creek a granitic pluton (Wedow and others, 1954, p. 8). A sample of granite talus contained stibnite and scheelite (Nelson and others, 1954). Joesting (1942) reported stibnite in placer concentrates and scarce cassiterite in placers. Placer gold was mined from 1932 to 1940 and intermittently from 1946 to 1959. Gravel is ten to eleven feet thick. Prospecting and maintenance work occurred in 1966. The creek has largely been mined out by surface workings (Eberlein and others, 1977, p. 24). Total production is not known, but about 2850 oz gold was reportedly produced from 1937 to 1941. A few blocks of unmined ground remain mid-valley but the creek has been largely mined. Two hundred ounces of gold was produced from one 300 ft by 150 ft cut on the Discovery Claim (Eberlein and others, 1977, p. 24).

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = Total production is not known, but about 2850 oz gold was reportedly produced from 1937 to 1941. A few blocks of unmined ground remain mid-valley but the creek has been largely mined. Two hundred ounces of gold was produced from one 300 ft by 150 ft cut on the Discovery Claim (Eberlein and others, 1977, p. 24).

Comments on the workings information

  • Workings / Exploration = Placer gold was mined from 1932 to 1940 and intermittently from 1946 to 1959. Prospecting and maintenance work occurred in 1966. The creek has largely been mined out by surface workings (Eberlein and others, 1977, p. 24).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF CI054
USGS Mineral Resources Data System MRDS A012222
USGS Mineral Resources Data System MRDS D002675

Bibliographic references

  • Deposit

    Smith, P.S., 1934, Mineral industry of Alaska in 1932: U.S. Geological Survey Bulletin 857-A, p. 1-91.

  • Deposit

    Smith, P.S., 1934, Mineral industry of Alaska in 1933: U.S. Geological Survey Bulletin 864-A, p. 1-94.

  • Deposit

    Smith, P.S., 1936, Mineral industry in Alaska in 1934: U.S. Geological Survey Bulletin 868-A, p. 1-91.

  • Deposit

    Smith, P.S., 1937, Mineral industry in Alaska in 1935: U.S. Geological Survey Bulletin 880-A, p. 1-95.

  • Deposit

    Smith, P.S. 1939, Mineral industry in Alaska in 1937: U.S. Geological Survey Bulletin 910-A, p. 1-113.

  • Deposit

    Smith, P.S., 1939, Mineral industry of Alaska in 1938: U.S. Geological Survey Bulletin 917-A, p. 1-113.

  • Deposit

    Nelson, A.E., West, W.S., and Matsko, J.J., 1954, Reconnaissance for radioactive deposits in eastern Alaska: U.S. Geological Survey Circular 348, 21 p.

  • Deposit

    Wedow, Helmuth, Jr., Killeen, P. L., and others, 1954, Reconnaissance for radioactive deposits in eastern interior Alaska, 1946: U.S. Geological Survey Circular 331, 36 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Circle quadrangle, Alaska: U.S. Geological Survey Misc. Field Studies Map MF-391, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.

  • Deposit

    Eberlein, G.D., Chapman, R.M., Foster, H.L., and Gassaway, J.S., 1977, Map and table describing known metalliferous and selected nonmetalliferous mineral deposits in central Alaska: U.S. Geological Survey Open-File Report 77-168-D, 132 p., 1 map, scale 1:1,000,000.

  • Deposit

    Menzie, W.D., Foster, H.L., Tripp, R.B., and Yeend, W.E., 1983, Mineral resource assessment of the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-170-B, 61 p., 1 sheet, 1:250,000.

  • Deposit

    Lampright, R.L., 1996, Gold placer deposits near Fairbanks Alaska: Iron Fire Publications, Nederland, Colorado, 135 p.

  • Deposit

    Smith, P.S., 1939, Mineral industry of Alaska in 1937: U.S. Geological Survey Bulletin 910-A, p. 1-113.

Comments on the references

  • Primary Reference = Eberlein and others, 1977.

General comments

Subject category Comment text
Deposit Model Name = Placer gold deposit (Cox and Singer, 1986; model 39a)

Reporter information

Type Date Name Affiliation Comment
Reporter 14-SEP-1998 C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements Avalon Development Corporation