Unnamed (southwest flank of Granite Peak)

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

Geologic information

Identification information

Deposit ID 10001078
MRDS ID A011762
Record type Site
Current site name Unnamed (southwest flank of Granite Peak)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -143.86642, 61.7416 (WGS84)
Relative position 2,000 ft south of Granite Peak summit. Best location: MacKevett and others, 1978, loc.3. Accurate within radius of 100 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary
Molybdenum Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Quartz Gangue

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 Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Chitina Valley Batholith
    Rock description Chitina Valley Batholith
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -143.86642, 61.7416

Comments on the geologic information

  • Geologic Description = A porphyry-type deposit containing pyrite and chalcopyrite-bearing quartz veinlets and disseminated sulfides in a Jurassic granodiorite pluton.
  • Age = Jurassic

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chistochina

Comments on the workings information

  • Workings / Exploration = None. Assays (MacKevett, 1976) showed as much as 0.1 ppm Au(AA), 2 ppm Ag, 5,000 ppm Cu, 70 ppm Mo, 100 ppm Sb and > 5,000 ppm Ba.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011762
USGS Alaska Resource Data File ARDF MC018

Bibliographic references

  • Deposit

    MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, scale 1:250,000.

  • Deposit

    MacKevett, E.M., Jr., Smith, J.G., Jones, D.L., and Winkler, G.R., 1978, Geologic map of the McCarthy C-8 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1418, scale 1:63,360.

  • Deposit

    MacKevett, E.M., Jr., Smith, J.G., Jones, D.L., and Winkler, G.R., 1978, Geologic map of the McCarthy C-8 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1418, 1 sheet, scale 1:63,360.

Comments on the references

  • Primary Reference = MacKevett, 1976

General comments

Subject category Comment text
Deposit Model Name = Porphyry Cu
Deposit Other Comments = See also: London and Cape prospect (MC060)

Reporter information

Type Date Name Affiliation Comment
Reporter 29-OCT-1997 Leonard, K.R. U.S. Geological Survey
Reporter 29-OCT-1997 Elliott, R.L. U.S. Geological Survey
Reporter 29-OCT-1997 Richter, D.H. U.S. Geological Survey