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Cape Kubugakli Lode

Occurrence in Alaska, United States with commodities Gold, Copper, Molybdenum, Lead, Antimony
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10001681
MRDS ID A012460
Record type Site
Current site name Cape Kubugakli Lode

Geographic coordinates

Geographic coordinates: -155.1025, 57.89937 (WGS84)
Relative position This site is located at the eastern end of Cape Kubugakli and encompasses an area of several square miles (Berg and Cobb, 1967, figure 4, locality 16; Cobb, 1972, MF 459, locality 2; MacKevett and Holloway 1977, locality 2; Church and others, 1989, MF 1539 I, locality 9).

Site location context

Political divisions (FIPS codes)

Kodiak Island(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Karluk D-4(quadrangle 1:63,360 scale)

Karluk N(quadrangle 1:100,000 scale)

Karluk(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Shelikof Strait(hydrologic unit)

Kodiak-Shelikof(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Katmai National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Molybdenum Secondary
Lead Secondary
Antimony Critical Secondary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Magnetite Ore
Molybdenite Ore
Pyrite Ore
Stibnite Ore
Tetrahedrite Ore
Quartz Gangue

Alteration

  • (Local) Sericitic and propylitic alteration and silicification have been mapped over an area of several square miles.

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4
Model code 79
USGS model code 21a
Deposit model name Porphyry Cu-Mo
Mark3 model number 2
Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock

Nearby scientific data

(1) -155.1025, 57.89937
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Quartz stringers 1/2-inch or less thick are present in some felsic dikes and quartz diorite plugs of Miocene age, and in some of the sedimentary rocks cut by the intrusives. The stringers carry minor amounts of galena, gold, magnetite, molybdenite, pyrite, stibnite, and tetrahedrite. Bedrock consists of sedimentary units of the Shelikof formation of Jurassic age. Sericitic and propylitic alteration and silicification have been mapped over an area of several square miles and includes the mineralized rocks.? Silt samples collected within this area may exhibit anomalous amounts of molybdenum, whereas panned concentrates may show anomalous antimony, boron, copper, gold, and silver (Church and others, 1989, MF 1539 I, Bulletin 1858). Gold, chalcopyrite, pyrite scheelite, and tourmaline have been noted in the concentrates. Mineralized rock samples may be anomalous in copper, gold, molybdenum, silver, and zinc.
  • Age = Miocene or younger

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Bristol Bay

Reference information

Bibliographic references

  • Deposit

    Smith, W.R., 1925, The Cold Bay-Katmai District, in Brooks and others, in Mineral resources of Alaska, 1923: U.S. Geological Survey Bulletin 773, p. 183-207.

  • Deposit

    Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

  • Deposit

    Detterman, R.L., Case, J.E., Wilson, F.H., and Yount, M.E., 1987, Geologic map of the Ugashik, Bristol Bay, and part of the Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-1685, 1 map sheet, scale 1:250,000.

  • Deposit

    Church, S.E., Detterman, R.L., and Wilson, F.H., 1989, Mineral and energy resource assessment maps of the Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-I, 2 map sheets, scale 1:250,000.

  • Deposit

    Church, S.E., Frisken J.G., and Wilson, F.H., 1989, Interpretation of exploration geochemical data from Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska: U.S Geological Survey Bulletin 1858, 45 p.

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Afognak, Karluk, Kodiak, and Trinity Islands quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-860, 49 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Karluk quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-459, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Church and others, 1989 (MF468, Bulletin 1858)

General comments

Subject category Comment text
Deposit Model Name = Porphyry Cu, porphyry Cu-Mo, polymetallic vein (Cox and Singer; model 17, 21a, 22c).
Deposit Model Number = 17, 21a, 22c
Deposit Other Comments = Site is located in Katmai National Park.

Reporter information

Type Date Name Affiliation Comment
Reporter 18-AUG-1998 S.H. Pilcher 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.