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Colorado Creek

Prospect 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 10308661
Record type Site
Current site name Colorado Creek
Alternate or previous names Kluklaklatna River, Little Mud

Geographic coordinates

Geographic coordinates: -157.7631, 64.13944 (WGS84)
Relative position This placer prospect is located along Colorado Creek, a southeast-flowing tributary to California creek. It is in sec. 31, T. 15 S., R. 6 E, Kateel River Meridian. The location is accurate within 1 mile. This prospect is locality 3 of Cobb (1972 [MF 423]), who mistakenly identified it as Camp Creek.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nulato A-4(quadrangle 1:63,360 scale)

Nulato SE(quadrangle 1:100,000 scale)

Nulato C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

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) -157.7631, 64.13944
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The area of Colorado Creek is underlain mainly by pelitic schist, phyllite, slate, sheared chert, quartzite, and some areas of recrystallized limestone (Mertie, 1937; Cass, 1959; Patton and Moll-Stalcup, 2000). Colorado Creek drains the granite or granodiorite Khotol pluton (Cass, 1959; Patton and Moll-Stalcup, 2000). That pluton has been dated by K-Ar and Ar/Ar techniques at 108-112 Ma (Flanigan, 1998). Placer prospecting on Colorado Creek took place before and during 1909 (Maddren, 1910). In 1934, Mertie (1937) panned gold at this site. There is no record of any further prospecting or mining.
  • Age = Quaternary.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Kaiyuh

Comments on the workings information

  • Workings / Exploration = Placer prospecting on Colorado Creek took place before and during 1909 (Maddren, 1910). In 1934, Mertie (1937) panned gold at this site. There is no record of any further prospecting or mining.

Reference information

Bibliographic references

  • Deposit

    Mertie, J.B., Jr., 1937, The Kaiyuh Hills, Alaska: U.S. Geological Survey Bulletin 868-D, p. 145-177.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Nulato quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-423, 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 Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.

  • Deposit

    Flanigan, B., 1998, Genesis and mineralization of ore deposits in the Illinois Creek region, West Central Alaska: University of Alaska, Fairbanks, M.Sc. thesis, 125 p., 2 plates.

  • Deposit

    Patton, W.W., Jr., and Moll-Stalcup, E.J., 2000, Geologic map of the Nulato quadrangle, west-central Alaska: U.S. Geological Survey Geologic Investigation Map I-2677, 41 p., 1 sheet, scale 1:250,000.

  • Deposit

    Maddren, A.G., 1910, The Innoko gold-placer district, Alaska, with accounts of the central Kuskokwim valley and the Ruby Creek and Gold Hill placers: U.S. Geological Survey Bulletin 410, 87 p.

  • Deposit

    Cass, J.T., 1959, Reconnaissance geologic map of the Nulato quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-291, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Mertie, 1937

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 07-AUG-01 Cameron, C.E. Northern Associates Inc.

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.