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  3. Mineral Resource Data System (MRDS)

Unnamed (west of lower Nabesna Glacier)

Occurrence in Alaska, United States with commodities Iron, Copper
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Geologic information

Identification information

Deposit ID 10000751
MRDS ID A011392
Record type Site
Current site name Unnamed (west of lower Nabesna Glacier)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -142.92143, 62.15108 (WGS84)
Relative position Best location: Richter, 1973, USGS I-789, loc. 9. Accurate within 100 ft radius
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Iron Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Magnetite Ore

Nearby scientific data

(1) -142.92143, 62.15108
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Comments on the geologic information

  • Geologic Description = Massive magnetite containing pyrite and minor chalcopyrite in amphibolitized Triassic Nikolai Greenstone near Tertiary porphyry intrusive.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Type of workings: surface

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011392
USGS Alaska Resource Data File ARDF NB040

Bibliographic references

  • Deposit

    Richter, D.H., 1973, Reconnaissance geological map of the Nabesna A-1 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map 1-789, scale 1:63,360.

  • Deposit

    Richter, D.H., Singer, D.A., and Cox, D.P., 1975, Mineral resources map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-655-K, scale 1:250,000.

Comments on the references

  • Primary Reference = Richter, 1973, USGS I-789

General comments

Subject category Comment text
Deposit Model Name = Lode: contact metasomatic

Reporter information

Type Date Name Affiliation Comment
Reporter 06-FEB-1997 Leonard, K.R. U.S. Geological Survey
Reporter 06-FEB-1997 Elliott, R.L. U.S. Geological Survey
Reporter 06-FEB-1997 Richter, D.H. U.S. Geological Survey