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  3. Mineral Resource Data System (MRDS)

Unnamed (in headwaters of Etchepuk River)

Occurrence 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. Alteration
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10308296
Record type Site
Current site name Unnamed (in headwaters of Etchepuk River)

Geographic coordinates

Geographic coordinates: -162.97128, 64.86434 (WGS84)
Relative position This occurrence, locality 70 of Gamble (1988), is on the south side of a west headwater tributary to the Etchepuk River at an elevation of about 250 feet. It is 7.5 miles northwest of Mt. Kachauik.

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Solomon D-2(quadrangle 1:63,360 scale)

Solomon NE(quadrangle 1:100,000 scale)

Solomon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Nome(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Alteration

  • (Local) The intrusive rocks are described as altered but the nature of alteration is not defined.

Nearby scientific data

(1) -162.97128, 64.86434
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = An altered quartz latite porphyry dike contains anomalous amounts of Au, Bi, and As; a grab sample of the dike contained 2,000 ppm As, 15 ppm Bi, and 0.35 ppm Au (Miller and Grybeck, 1973). Country rocks of the intrusive are impure Ordovician chlorite marble (Till and others, 1986). The quartz latite prophyry is probably mid-Cretaceous in age, the age of the composite Kachauik pluton to the southeast (Miller and others, 1972; Till and others, 1986). A K/Ar age for the Kachauik pluton is 86.1 +/- 3 Ma (Miller and others, 1972).
  • Age = Mid-Cretaceous ; felsic intrusive rocks in the area may be similar in age to the Kachauik pluton which has K/Ar date of 86.1 +/- 3 Ma (Miller and others, 1972).

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Council

Comments on the workings information

  • Workings / Exploration = No workings or exploration acitivities are known but regional stream sediment geochemistry and airborne radiometric surveys may have been completed in the area.

Reference information

Bibliographic references

  • Deposit

    Miller, T.P., Grybeck, D.J., Elliott, R.L., and Hudson, T.L., 1972, Preliminary geologic map of the eastern Solomon and southeastern Bendeleben quadrangles, eastern Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-256, 11 p.

  • Deposit

    Miller, T.P., and Grybeck, D.J., 1973, Geochemical survey of the eastern Solomon and southeastern Bendeleben quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 553, 115 p.

  • Deposit

    Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.

  • Deposit

    Gamble, B.M., 1988, Non-placer mineral occurrences in the Solomon, Bendeleben, and southern part of the Kotzebue quadrangles, western Alaska: U.S. Geological Survey Map MF-1838-B, 13 p., 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Miller and Grybeck, 1973

General comments

Subject category Comment text
Deposit Model Name = Felsic intrusive rocks are altered and contain anomalous levels of gold.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-AUG-99 Travis L. Hudson Applied Geology

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.