1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Occasional Group

Occurrence in Alaska, United States with commodities Copper, Lead, Zinc
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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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10001733
MRDS ID A012517
Record type Site
Current site name Occasional Group

Geographic coordinates

Geographic coordinates: -147.53337, 68.29977 (WGS84)
Relative position Site is at an elevation of about 3,800 ft. on the north side of a large, southeast-flowing tributary to the upper Wind River approximately 12 miles northeast of the mouth of Beaucoup Creek (west-center sec. 21, T. 13 S., R. 20 E., of the Umiat Meridian). Location accurate within 1-mile radius.

Site location context

Political divisions (FIPS codes)

North Slope(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Philip Smith Mountains B-1(quadrangle 1:63,360 scale)

Arctic SW(quadrangle 1:100,000 scale)

Philip Smith Mountains(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Arctic National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Lead Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Skajit Limestone;Hunt Fork Shale; Calcareous Sandstone Member
    Rock description Skajit Limestone;Hunt Fork Shale; Calcareous Sandstone Member

Nearby scientific data

(1) -147.53337, 68.29977
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Galena, sphalerite and chalcopyrite occur in vein and boxwork of veinlets in limestone (Grybeck, 1977) near the unconformable upper contact of the Skajit Limestone with calcareous sandstone member of Hunt Fork Shale and/or Beaucoup Formation (Menzie and others, 1985). No other descriptive information is available.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chandalar

Comments on the workings information

  • Workings / Exploration = Twenty-two claims were located by Placid Oil in 1971 and were active until at least 1978; they have since been abandoned.

Reference information

Bibliographic references

  • Deposit

    Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    Barker, J.C., 1978, Mineral Investigations of certain lands in the eastern Brooks Range: a summary report: US Bureau of Mines Open-File No. 63-78

  • Deposit

    Menzie, W.D., Reiser, H.N., Brosgi, W.P., and Detterman, R.L., 1985, Map showing distribution of mineral resources (excepting oil and gas) in the Philip Smith Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Investigations Map MF-879-C, 2 sheets, scale 1:250,000.

  • Deposit

    Maas, K.M., 1987, Availability of land for Mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Special Publication, 34 p., 33 sheets.

Comments on the references

  • Primary Reference = Grybeck, 1977

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-1999 J.M. Britton 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.