Unnamed (head of Chathenda Creek)

Prospect in Alaska, United States with commodities Copper, Molybdenum, Gold

Geologic information

Identification information

Deposit ID 10000773
MRDS ID A011415
Record type Site
Current site name Unnamed (head of Chathenda Creek)
Alternate or previous names Johnson Creek
Related records 10231888

Geographic coordinates

Geographic coordinates: -141.6275, 62.11165 (WGS84)
Relative position Best location: Richter and Jones, 1973, USGS I-749; N 1/2 of SW 1/4, Sec. 19, T.4 N., R.21 E. Accurate within 1000 ft radius
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Gold Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore

Alteration

  • (Local) Hornfels

Nearby scientific data

(1) -141.6275, 62.11165

Comments on the geologic information

  • Geologic Description = Disseminated pyrite and chalcopyrite in small diorite/granodiorite stock of Cretaceous age and surrounding metamorphosed country rock. Stock intrudes Upper Jurassic to Lower Cretaceous hornfelsed argillite?? /
  • Age = Cretaceous

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Assays show 0.15% Cu and less than 0.01% Mo (USGS MF-655K, loc. 44). Type of workings: surface

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011415
USGS Alaska Resource Data File ARDF NB081

Bibliographic references

  • Deposit

    Richter, D.H., and Jones, D.L., 1973, Reconnaissance geologic map of the Nabesna A-2 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-749, 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.

  • Deposit

    Hollister, V.F., Anzalone, S.A., and Richter, D.H., 1975, Porphyry copper belts of southern Alaska and contiguous Yukon Territory: CIM (Canadian Mining and Metallurgical) Bulletin, v. 68, no. 756, p. 104-112.

  • Deposit

    Richter, D.H., and Matson, N.A., 1970, Geochemical data from the Nabesna A-2 quadrangle, Alaska: U.S. Geological Survey Open-File Report 70-275, 12 p., 1 sheet, scale 1:63,360.

Comments on the references

  • Primary Reference = Richter and Matson, 1970, USGS OF 397, loc 3.

General comments

Subject category Comment text
Deposit Model Name = Lode: porphyry
Deposit Other Comments = See also: Carl Creek (NB082)

Reporter information

Type Date Name Affiliation Comment
Reporter 04-FEB-1997 Leonard, K.R. U.S. Geological Survey
Reporter 04-FEB-1997 Elliott, R.L. U.S. Geological Survey
Reporter 04-FEB-1997 Richter, D.H. U.S. Geological Survey