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Bobtail Creek

Past Producer in Alaska, United States with commodities Gold, Mercury
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10308694
Record type Site
Current site name Bobtail Creek

Geographic coordinates

Geographic coordinates: -161.42193, 61.91031 (WGS84)
Relative position Bobtail Creek is a north tributary to Buster Creek (RM008), a west tributary to Kako Creek. These creeks are not named on the USGS 1:63,360 topographic map (1952 edition) of the area. The map site of the Bobtail Creek placer mine is 4.5 miles northwest of Kako Landing on the Yukon River. It is about 0.1 mile southwest of the center of sec. 17, T. 21 N., R. 66 W., of the Seward Meridian. This is locality 14 of Hoare and Cobb (1972, 1977).

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Russian Mission D-7(quadrangle 1:63,360 scale)

Russian Mission NW(quadrangle 1:100,000 scale)

Russian Mission(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Russian Mission Native Corporation(ANCSA Village)

ANCSA Village NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Mercury Secondary

Materials information

Materials Type of material
Cinnabar Ore
Gold Ore

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -161.42193, 61.91031
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Bobtail Creek was mostly mined by dragline in the 1930's. Mining took place from an elevation of about 220 feet,downstream for a distance of about 2,500 feet (Hickok and McAtee, 1990). The tailings gravel mostly comprise siltstone and shale, along with 10 percent or less chert, rhyolite, tuff, and andesite (Hickok and McAtee, 1990, p. 11). Joesting (1942) reported that rare cinnabar accompanies the placer gold. Hickok and McAtee (1990) estimated that 2,000 to 4,000 ounces of gold were recovered from Bobtail Creek and that reserves exist along and below the old tailings. Bobtail Creek heads on the ridge where the rhyolite-hosted Kako lode gold prospect (RM007) is located.
  • Age = Quaternary.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Marshall

Comments on the production information

  • Production Notes = Hickok and McAtee (1990) estimate that 2 to 4 thousand ounces of gold were recovered from Bobtail Creek.

Comments on the reserve resource information

  • Reserves = Hickok and McAtee (1990, p. 11) conclude that reserves are present along and below the old tailings.

Comments on the workings information

  • Workings / Exploration = About 2,500 feet of dragline workings are present on Bobtail Creek.

Reference information

Bibliographic references

  • Deposit

    Hoare, J M., and Cobb, E.H., 1972, Metallic mineral resources map of the Russian Mission quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-444, scale 1:250,000.

  • Deposit

    Hoare, J.M., and Cobb, E.H., 1977, Mineral occurrences (other than mineral fuels and construction materials) in the Bethel, Goodnews, and Russian Mission quadrangles, Alaska: U.S. Geological Survey Open-File Report 77-156, 98 p.

  • Deposit

    Hickok, B., and McAtee, J., 1990, Lode gold occurrences near the Kako and Stuyahok placer mines, southwestern Alaska: Calista Corporation, Anchorage, unpublished report, 17 p.

  • Deposit

    Joesting, H.R., 1942, Strategic mineral occurences in interior Alaska: Alaska Territorial Department of Mines Pamphlet 1, 46 p.

  • Deposit

    Hoare, J M., and Cobb, E.H., 1972, Metallic mineral resources map of the Russian Mission quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-444, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Hickok and McAtee, 1990

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-2001 Travis L. Hudson Applied Geology
Reporter 10-JUN-2001 Madelyn A. Millholland Millholland & Associates

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.