Unnamed (north side of Carl Creek)

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

Geologic information

Identification information

Deposit ID 10093989
MRDS ID A011416
Record type Site
Current site name Unnamed (north side of Carl Creek)
Alternate or previous names Carl Creek, Cccu 1-101
Related records 10234247

Geographic coordinates

Geographic coordinates: -141.5886, 62.0486 (WGS84)
Relative position Two altered areas of about 100 m by 200 m each lie within 1 mi radius of lat-long coordinates. Best location: Richter and Jones, 1973, USGS I-749; N of?Carl Creek; within 500 ft radius
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Molybdenum Secondary
Silver Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Orthoclase Gangue
Quartz Gangue
Bornite Unknown
Magnetite Unknown
Molybdenite Unknown

Alteration

  • (Local) Sericite

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Rock unit name Chisana Formation
    Rock description Chisana Formation
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite

Nearby scientific data

(1) -141.5886, 62.0486

Comments on the geologic information

  • Geologic Description = Pyrite and chalcopyrite in quartz veinlets and in disseminations in 111 m.y.-old biotite-hornblende granodiorite and biotite-quartz monzonite that intrude volcanic rocks of the Upper Cretaceous Chisana Formation.
  • Age = Cretaceous

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant Yes

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category Federal

Ownership information

  • Type Operator
    Owner Donald Dippel
    Home office Alaska
    Year 1983

Reserves and resources

  • Type In-situ
    Estimate year 1979
    Inferred 14,510,000mt ore
    Total resources 14,510,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper 0.2 wt-pct Copper Primary 1979

Comments on the workings information

  • Workings / Exploration = Average grade from surface sampling: 0.10% Cu, all samples below 1.5% Cu, and less than 0.01% Mo (Richter and others, 1975, USGS MF-655-K, loc. 45 and 46).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011416
USGS Alaska Resource Data File ARDF NB082
U.S. Bureau of Mines Minerals Availability System MAS 0020780038
USGS Mineral Resources Data System MRDS 10234247 Carl Creek merged with this record.

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.

  • Ownership

    Alaska Kardex 078-101

  • Reserve-Resource

    Engineering & Mining Journal 7905

  • 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

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected nonmetalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    Bundtzen, T.K., Eakins, G.R., and Conwell, C.N., 1983, Alaska mineral resources 1981-82: Alaska Division of Geological & Geophysical Surveys, Annual Report 1981-2, 153 p., 4 sheets, scale 1:2,500,000.

  • Deposit

    Engineering & Mining Journal 7905, No. 144

  • Deposit

    MTA 82 No. E-54

  • Deposit

    AK Mine License - 1983

  • Deposit

    Cobb, E.H., and Richter, D.H., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Nabesna quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-927, 117 p.

  • Deposit

    Richter, D.H., and Matson, N.A., Jr., 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.

  • Deposit

    Richter, D.H., Lanphere, M.A., and Matson, N.A., Jr., 1975, Granite plutonism and metamorphism, eeastern Alaska Range, Alaska: Geological Society of American Bulletin, v. 86, p. 819-820.

  • 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.

General comments

Subject category Comment text
Deposit Model Name = Stockwork, porphyry
Deposit Other Comments = One of 8 porphyry copper deposits which together make up the known principal mineral resource potential of the Nabesna quadrangle; see also Horsfeld (NB099), Bond Creek (NB051), Orange Hill NB043), and Baultoff (NB100) deposits.

Reporter information

Type Date Name Affiliation Comment
Reporter 28-JAN-97 Leonard, K.R. U.S. Geological Survey
Reporter 28-JAN-97 Elliott, R.L. U.S. Geological Survey
Reporter 28-JAN-97 Nokleberg, W.J. U.S. Geological Survey
Reporter 28-JAN-97 W.J.; Richter, D.H. U.S. Geological Survey
Reporter 12-FEB-88 Carnes, R. David U.S. Bureau of Mines