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  3. Mineral Resource Data System (MRDS)

Rocky Creek

Past Producer in Alaska, United States with commodity Gold
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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 10308698
Record type Site
Current site name Rocky Creek

Geographic coordinates

Geographic coordinates: -159.87183, 61.05833 (WGS84)
Relative position Rocky Creek is a southeast tributary of California Creek in the headwaters of the Tuluksak River. Most of Rocky Creek has been placer mined upstream from its confluence with California Creek. The map site is the approximate midpoint of the placer workings. It is near the center of sec. 11, T. 11 N., R. 60 W., of the Seward Meridian. Rocky Creek is included in locality 17 of Hoare and Cobb (1972, 1977).

Site location context

Political divisions (FIPS codes)

Bethel(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Russian Mission A-3(quadrangle 1:63,360 scale)

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

Russian Mission(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Kuskokwim Delta(hydrologic unit)

Lower Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Calista Corporation(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

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
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -159.87183, 61.05833
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The placer deposit on Rocky Creek is a continuation of the deposit on California Creek (RM034). The Rocky Creek placer was one of the richest in the upper Tuluksak River drainage. About 2 miles of the creek from the mouth to the headwaters have been mined, much of it by dredging. The grade of the deposit increased upstream. The bedrock in the drainage is thermally metamorphosed Jurassic volcanic rocks that are intruded by a mid-Cretaceous granitic stock at the head of the drainage (Box and others, 1993). The placer appears to continue upstream to near the contact zone of the granitic stock.
  • Age = Quaternary.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Aniak

Comments on the workings information

  • Workings / Exploration = About 2 miles of the creek have been placer mined, much of it by dredging.

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

    Box, S.E, Moll-Stalcup, E.J., Frost, T.P., and Murphy, J.M., 1993, Preliminary geologic map of the Bethel and southern Russian Mission quadrangles, southwestern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2226-A, 20 p., scale 1:250,000.

  • 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 = Hoare and Cobb, 1977

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.