St. Marys Creek (Gulch)

Past Producer in Alaska, United States with commodities Gold, Arsenic, Copper, Molybdenum, Lead, REE, Antimony, Thorium, Titanium, Uranium, Tungsten

Geologic information

Identification information

Deposit ID 10307332
Record type Site
Current site name St. Marys Creek (Gulch)

Geographic coordinates

Geographic coordinates: -148.21328, 67.51973 (WGS84)
Relative position St. Marys Creek drains the Chandalar mine area and joins Big Creek near the lower limit of mining on Big Creek. The reference point is near the junction of St. Marys Creek and Big Creek (SE1/4 sec. 9, T. 32 N., R. 3 W., of the Fairbanks Meridian). It is approximately 5 miles south of the southwest end of Squaw Lake. Mining has occurred upstream from the reference point for approximately 1/2 mile. The location is accurate within a 1/2-mile radius. See fig. 2 in Chipp (1970).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Arsenic Secondary
Copper Secondary
Molybdenum Secondary
Lead Secondary
REE Secondary
Antimony Secondary
Thorium Secondary
Titanium Secondary
Uranium Secondary
Tungsten Secondary

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

Nearby scientific data

(1) -148.21328, 67.51973

Comments on the geologic information

  • Geologic Description = Maddren (1913) noted that most of the gold that had been produced in the Chandalar district up to that time had come from upper Big Creek and St. Marys Gulch. Despite its production, there is little information describing St. Marys Creek, which drains the area of gold quartz lode deposits in the Chandalar district (CH041-042). Chipp (1970) noted that pan samples from Big Creek and St. Marys Gulch show the gold to be bright yellow and irregular shot-like to flattened; a few crystals occur. The average grain size of the gold is said to be about 1 mm, and there are many 2- to 3-mm nuggets (Chipp, 1970). Some nuggets include quartz crystals and iron oxides. It is reported that, in addition to the gold the concentrates contain a large suite of heavy minerals including monazite(?), magnetite, hematite, rutile, pyrite, arsenopyrite, chalcopyrite, galena, stibnite, molybdenite, scheelite, and uranothorianite.
  • Age = Quaternary.

Economic information

Economic information about the deposit and operations

Development status Past Producer

Comments on exploration

  • Status = Inactive

Mining district

District name Chandalar

Comments on the production information

  • Production Notes = Reported to be one of the major gold producers of the Chandalar area, although there is no record of actual production.

Comments on the workings information

  • Workings / Exploration = Most of the early mining was by drifting or by hand. Heiner and Wolff (1968) reported drift mining in the winter of 1915. Some exploration work, including drilling and sampling, was reported in 1986 on several properties in the area, including St. Marys Creek (Bundtzen and others, 1987).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF CH044

Bibliographic references

  • Deposit

    Brooks, A.H., 1909, The mining industry in 1908: U.S. Geological Survey Bulletin 379-A, p. 21-62.

  • Deposit

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

  • Deposit

    Brooks, A.H., 1915, Mineral resources of Alaska in 1914: U.S. Geological Survey Bulletin 622, 238 p.

  • Deposit

    Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

  • Deposit

    Reed, I.M., 1929, Report on mining conditions in the Chandalar district: Alaska Territorial Department of Mines Miscellaneous Report 31-3, 5 p.

  • Deposit

    Reed, I.M., 1930, Report on the Little Squaw area of the Chandalar mining district: Alaska Territorial Department of Mines Miscellaneous Report 31-4, 18 p.

  • Deposit

    Reed, I.M., 1930, The future of the placer mining industry in Seward Peninsula and the interior of Alaska: Alaska Territorial Department of Mines Miscellaneous Report 195-13, 16 p.

  • Deposit

    Anderson, Eskil, 1956, Big Creek placer deposit, Chandalar mining district, Alaska: Alaska Territorial Department of Mines Prospect Evaluation 31-1, 4 p.

  • Deposit

    Saunders, R.H., 1959, Silver-lead occurrences in the Fairbanks district: Alaska Territorial Department of Mines Miscellaneous Report 194-18, 19 p., 2 maps, scale 1:63,360.

  • 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

    Eakins, G.R. and Forbes, R.B., 1976, Investigation of Alaska's uranium potential: Alaska Division of Geological and Geophysical Surveys Special Report 12, 372 p., 5 sheets, scale 1:1,000,000.

  • Deposit

    Chipp, E.R., 1970, Geology and geochemistry of the Chandalar area, Brooks Range, Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 42, 39 p., 1 sheet, scale 1:36,000.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-457, 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 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

    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

    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

    Bundtzen, T.K., Green, C.B., Deagen, J., and Daniels, C.L., 1987, Alaska's mineral industry, 1986: Alaska Division of Geological and Geophysical Surveys, Special Report 40, 68 p.

  • Deposit

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

Comments on the references

  • Primary Reference = Chipp, 1970

General comments

Subject category Comment text
Deposit Model Name = Placer Au (Cox and Singer, 1986; model 39a)
Deposit Other Comments = See also: Big Creek (CH043).

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-99 J.M. Britton U.S. Geological Survey