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  3. Mineral Resource Data System (MRDS)

Unnamed (north of lower Childs Glacier)

Occurrence in Alaska, United States with commodities Copper, 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. 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 10307385
Record type Site
Current site name Unnamed (north of lower Childs Glacier)

Geographic coordinates

Geographic coordinates: -144.83948, 60.68462 (WGS84)
Relative position This occurrence is at an elevation of about 1200 feet at the north edge of lower Childs Glacier, about one mile south of Mt. O'Neel. It is in SE1/4 sec. 3, T. 14 S., R. 3 E., of the Copper River Meridian. Site is accurately located to within 1000 ft. This location as site C-10 of Jansons and others (1984).

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cordova C-3(quadrangle 1:63,360 scale)

Cordova NE(quadrangle 1:100,000 scale)

Cordova(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Copper River(hydrologic unit)

Copper River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chugach National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore

Mineral occurrence model information

Model code 91
USGS model code 24b
Deposit model name Massive sulfide, Besshi (Japanese deposits)
Mark3 model number 30

Nearby scientific data

(1) -144.83948, 60.68462
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Economic information

Comments on the geologic information

  • Geologic Description = This occurrence consists of pyrite and chalcopyrite disseminated in interbedded slate and greenstone of the Upper Cretaceous Valdez Group (Nelson and others, 1985). Four grab samples collected and analyzed by the U.S. Bureau of Mines contained 34 ppm to 0.64% Cu, and 110 ppm to 0.17% Zn (Jansons and others, 1984). This site is at the eastern end of a 65-mile-long belt of similar rocks that to the west host massive sulfide deposits (Nelson and others, 1984; 1985; Crowe and others, 1992).
  • Age = Late Cretaceous based on the age of the host rocks.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Copper River

Comments on the workings information

  • Workings / Exploration = Site examined during U.S. Bureau of Mines and U.S.G.S. mineral resource assessment of the Chugach National Forest (Jansons and others, 1984; Nelson and others, 1984). Four grab samples collected and analyzed by the U.S. Bureau of Mines contained 34 ppm to 0.64% Cu, and 110 ppm to 0.17% Zn (Jansons and others, 1984).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Jansons and others, 1984

General comments

Subject category Comment text
Deposit Model Name = Besshi massive sulfide (Cox and Singer, 1986; model 24b)
Deposit Other Comments = Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-00 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.