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  3. Mineral Resource Data System (MRDS)

Unnamed (north of Arrigetch Peaks)

Occurrence in Alaska, United States with commodities Arsenic, Tin, Bismuth
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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. 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 10308329
Record type Site
Current site name Unnamed (north of Arrigetch Peaks)

Geographic coordinates

Geographic coordinates: -154.16344, 67.44961 (WGS84)
Relative position This site is an elevation of about 3700 feet near the head of an unnamed creek 3 miles north of the Arrigetch Peaks. It is in the NE1/4 of sec. 27, T. 24 N., R. 21 E., of the Kateel River Meridian. Location accurate to within 2000 ft. The site corresponds to locality 32 of Grybeck and Nelson (1981).

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Survey Pass B-3(quadrangle 1:63,360 scale)

Survey Pass S(quadrangle 1:100,000 scale)

Survey Pass C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Gates of the Arctic National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Arsenic Critical Primary
Tin Critical Primary
Bismuth Critical Secondary

Alteration

  • (Local) Contact metamorphism and skarn.

Mineral occurrence model information

Model code 43
USGS model code 14b
Deposit model name Sn skarn

Nearby scientific data

(1) -154.16344, 67.44961
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = This occurrence consists of selected float samples of iron-stained Paleozoic schist and skarn. The source of the float probably is a contact-metamorphic zone adjacent to Devonian granite that crops out to the south. Selected samples contained up to 5000 ppm As, 20 ppm Bi, and 1000 ppm Sn (Grybeck and Nelson, 1981). This occurrence probably is similar in origin to other Devonian contact-metamorphic deposits in nearby areas of the Brooks Range (Newberry and others, 1986).
  • Age = Probably related to Devonian granite.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Koyukuk

Comments on the workings information

  • Workings / Exploration = Sampled during regional geologic mapping by the USGS in the late 1970s.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Grybeck and Nelson, 1981

General comments

Subject category Comment text
Deposit Model Name = Skarn (Cox and Singer, 1986; model 14b)
Deposit Other Comments = Located within Gates of the Arctic National Park.

Reporter information

Type Date Name Affiliation Comment
Reporter 20-SEP-99 S.W. Nelson U.S. Geological Survey

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.