Slate Creek (placer)

Past Producer in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10001378
MRDS ID A012120
Record type Site
Current site name Slate Creek (placer)

Geographic coordinates

Geographic coordinates: -149.9033, 67.22969 (WGS84)
Relative position Slate Creek is a west-flowing tributary to the Middle Fork Koyukuk River, and the confluence of the two is at the old town of Coldfoot. The reference point, approximately 15 miles southwest of Poss Mountain, is about at the center of early mining activity on the upper creek (NE1/4 sec. 26, T. 28 N., R. 11 W., of the Fairbanks Meridian). It is approximately the same location as the symbol indicating recent mining in Brosgi and Reiser (1964). Mining in this area probably extended about 1 mile both up- and downstream from the reference point. There was also mining activity on lower Slate Creek below its confluence with Myrtle Creek in the Wiseman quadrangle. The location is accurate within a 1-mile radius.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold 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

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -149.9033, 67.22969

Comments on the geologic information

  • Geologic Description = Much of the descriptive information available for Slate Creek does not distinguish between the lower part of the creek that lies in the Wiseman quadrangle and the upper part of the creek that lies in the Chandalar quadrangle. Reed (1938) reported that no deep channel was found on Slate Creek although placer gold was found on Slate Creek in the present channel and in high benches. On the upper creek (the part in the Chandalar quadrangle) the present channel was worked in the short canyon just below the reference point (about 2 miles east of the Myrtle Creek landing strip), and the old-timers were said to have rockered out $8 per day (gold at $20 per ounce). The present channel and a low left-limit bench were also worked from a short distance above the canyon for a distance of 1 1/2 miles. The bench was said to have bedrock only a few feet above the bedrock in the present channel. Bedrock is described as mica schist and slate or phyllite with small bodies of quartz and cut by several altered diorite dikes (this description may apply principally to the lower two-thirds of the creek). Upper Slate Creek lies along the boundary between Devonian quartz-muscovite schist and a Devonian(?) sequence of graywacke, phyllite, and volcanic rocks and chert (Brosgi and Reiser, 1964).
  • Age = Quaternary.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Koyukuk

Comments on the production information

  • Production Notes = Most of the production was apparently from below the junction with Myrtle Creek (Wiseman quadrangle), and any production figures probably reflect that production. Production between 1900 and 1909 said to be worth $3,000 (gold at $20 per ounce) (Maddren, 1913).

Comments on the workings information

  • Workings / Exploration = Mined mostly by simple hydraulic and hand methods; bulldozer and sluice plate in use in 1974. Stripping reported in preparation for mining in 1993.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012120
USGS Alaska Resource Data File ARDF CH007

Bibliographic references

  • Deposit

    Schrader, F.C., 1904, A reconnaissance in northern Alaska across the Rocky Mountains, along Koyukuk, John, Anaktuvuk, and Colville rivers and the Arctic coast to Cape Lisburne, in 1901, with notes by W.J. Peters: U.S. Geological Survey Professional Paper 20, 139 p.

  • Deposit

    Maddren, A.G., 1913, The Koyukuk-Chandalar region, Alaska: U.S. Geological Survey Bulletin 532, 119 p.

  • 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

    Holdsworth, P.R., 1952, Report of the Commissioner of Mines for the Biennium ended December 31, 1952: Alaska Territorial Department of Mines Annual Report 1952, 66 p.

  • Deposit

    Brosgi, W.P., and Reiser, H.N., 1964, Geologic map and section of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1-375, 1 sheet, scale 1:250,000.

  • Deposit

    Heiner, L.E., and Wolff, E.N., eds., 1968, Mineral resources of northern Alaska, Final report, submitted to the NORTH Commission: Mineral Industry Research Laboratory, University of Alaska, Report 16, 306 p.

  • Deposit

    Mulligan, J.J., 1974, Mineral resources of the Trans-Alaska Pipeline corridor: U.S. Bureau of Mines Information Circular 8626, 24 p.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Chandalar and Wiseman quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-340, 205 p.

  • Deposit

    Cobb, E.H., 1977, Placer deposit map of central Alaska: U.S. Geological Survey Open-File Report 77-168B, 64 p., 1 map, scale 1:1,000,000.

  • Deposit

    Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.

  • Deposit

    U.S. Bureau of Mines, 1978, Mineral appraisal of the proposed Gates of the Arctic Wilderness National Park, Alaska, A preliminary comment: U.S. Bureau of Mines Open-File Report 109-78, 29 p., 4 sheets.

  • Deposit

    Cobb, E.H., and Cruz, E.L., 1983, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in the Chandalar quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-278, 91 p.

  • Deposit

    Eakins, G.R., Bundtzen, T.K., Lueck, L.L. Green, C.B., Gallagher, J.L., and Robinson, M.S., 1985, Alaska mineral industry, 1984: Alaska Division of Geological and Geophysical Surveys Special Report 38, 57p.

  • Deposit

    Maas, K.M., 1987, Maps summarizing land availability for mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Open-File Report 10-87, 33 sheets.

  • Deposit

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

  • Deposit

    Schrader, F.C., 1900, Preliminary report on a reconnaissance along the Chandalar and Koyukuk Rivers, Alaska, in 1899: U.S. Geological Survey Twenty-first Annual Report, Part 2, p. 441-486.

  • Deposit

    Maas, K.M., 1987, Maps summarizing land availability for mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Open-File Report 10-87, 33 quadrangle overlays.

  • Deposit

    Bundtzen, T.K., Swainbank, R.C., Clough, A.H., Henning, M.W., and Hansen, E.W., 1994, Alaska's mineral industry, 1993: Alaska Division of Geological and Geophysical Surveys Special Report 48, 84 p.

  • Deposit

    Holdsworth, P.R., 1955, Report of the Commissioner of Mines for the biennium ended December 31, 1954: Alaska Territorial Department of Mines Annual Report 1954, 110 p.

  • Deposit

    Smith, P.S., 1941, Mineral industry of Alaska in 1939: U.S. Geological Survey Bulletin 926-A, p. 1-106.

  • Deposit

    Maddren, A.G., 1910, The Koyukuk-Chandalar gold region: U.S. Geological Survey Bulletin 442-G, p. 284-315.

  • Deposit

    Reed, I.M., 1938, Upper Koyukuk region, Alaska (Wiseman, Chandalar, and Bettles): Alaska Territorial Department of Mines Miscellaneous Report 194-7, 201 p.

Comments on the references

  • Primary Reference = Maddren, 1913

General comments

Subject category Comment text
Deposit Model Name = Placer Au (Cox and Singer, 1986; model 39a)
Deposit Other Comments = Many of the references to and descriptions of Slate Creek do not differentiate between the upper creek (in the Chandalar quadrangle) and the lower creek (in the Wiseman quadrangle). Most probably refer to the lower part of the creek, which produced most of the gold. ? See also: Myrtle Creek and Slate Creek in the Wiseman quadrangle (see Cobb, 1981,OFR 81-732B, for a list of references for these occurrences in the Wiseman quadrangle).? Alaska Kardex No. 031-26, 031-109 (Kardex is a card file mining claim information system located at the State of Alaska DNR Public Information Center in Fairbanks).

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-1999 J.M. Britton U.S. Geological Survey