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Unnamed occurrence (Inmachuk River)

Occurrence in Alaska, United States with commodities Silver, Lead
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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. Alteration
  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 10001897
MRDS ID A012724
Record type Site
Current site name Unnamed occurrence (Inmachuk River)

Geographic coordinates

Geographic coordinates: -163.30341, 65.89936 (WGS84)
Relative position This occurrence is supposed to be on the left limit of the Inmachuk River, on the ridge between Inmachuk River and Collins Creek. The location is very approximate and unconfirmed. It is locality 6 of Cobb (1972; MF 417; 1975; OFR 75-429).

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bendeleben D-3(quadrangle 1:63,360 scale)

Bendeleben NE(quadrangle 1:100,000 scale)

Bendeleben C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Goodhope-Spafarief Bay(hydrologic unit)

Northern Seward Peninsula(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Lead Primary

Materials information

Materials Type of material
Galena Ore
Limonite Gangue
Magnetite Gangue
Pyrite Gangue

Alteration

  • (Local) A gossanous, limonitic cap is reportedly developed.

Nearby scientific data

(1) -163.30341, 65.89936
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Mertie (1919) described a sample said to be from this occurrence as containing galena, magnetite, limonite, and pyrite. The galena was supposedly argentiferous. The gossanous character of the occurrence was reported by Anderson (1947), but its location and nature have not been confirmed. Bedrock of the area is a metasedimentary schist and marble sequence of Lower Paleozoic age (Till and others, 1986).
  • Age = Unknown

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairhaven

Comments on the workings information

  • Workings / Exploration = Anderson (1947) reports that some development work has taken place; surface prospecting pits are most likely.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Cobb, 1975 (OFR 75-429)

General comments

Subject category Comment text
Deposit Model Name = Galena in metasedimentary rocks; epigenetic (?); stratiform (?)
Deposit Other Comments = All references to this site are from secondary sources and the site was not visited by USGS personnel during 1982 field work in the area.

Reporter information

Type Date Name Affiliation Comment
Reporter 15-MAR-1999 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.