Kijik River

Prospect in Alaska, United States with commodities Copper, Gold, Lead, Molybdenum, Silver, Zinc
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Economic information about the deposit and operations
  13. Mining district
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10002135
MRDS ID A013029
Record type Site
Current site name Kijik River
Alternate or previous names Thompson, Hi, Hi No. 2, Kijik, Gleason, Joe Thompson

Geographic coordinates

Geographic coordinates: -154.32268, 60.35943 (WGS84)
Relative position Approximately 4.0 km NW of Kijik Mountain; on peak 3,440 - 1.9 km west of Kiljik River. Locality 18 of Nelson and others (1985), locality 26 of MacKevett and Holloway (1977), and the approximate location of locality 4 of Cobb (1972). Sec. 9, T. 3 N., R. 29 W., of the Seward Meridian. Locality accurate within 2.0 km.

Site location context

Political divisions (FIPS codes)

Lake and Peninsula(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lake Clark B-4(quadrangle 1:63,360 scale)

Lake Clark SE(quadrangle 1:100,000 scale)

Lake Clark C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lake Clark(hydrologic unit)

Kvichak-Port Heiden(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Lake Clark National Preserve(National Preserve)

National Preserve NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Seward 3N 29W 9 Alaska

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Lead Secondary
Molybdenum Secondary
Silver Secondary
Zinc Critical Secondary

Comments on the commodity information

  • Ore Material = argentiferous galena

Materials information

Materials Type of material
Silver Ore
Arsenopyrite Ore
Chalcopyrite Ore
Molybdenite Ore
Pyrite Ore
Sphalerite Ore
Galena Ore
Calcite Gangue
Quartz Gangue
Rhodochrosite Gangue

Alteration

  • (Local) Extensive propylitic and silicic alteration of the dacite porphyry (Nokleberg and others, 1997).

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4
Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Paleocene
    Chronological age 62.7
    Dating method K-Ar
    Stratigraphic age (youngest) Paleocene
    Chronological age 59.45
    Dating method K-Ar

Nearby scientific data

(1) -154.32268, 60.35943

Economic information

Comments on the geologic information

  • Geologic Description = Granodiorite stock and rhyolite (Nelson and others, 1983; unit Tv) cut by 0.64-2.54 cm thick N-S trending quartz-chalcopyrite and quartz-pyrite-arsenopyrite veins. Mineralization also disseminated in the rhyolite and granodiorite (Resource Associates of Alaska, 1976). Grab samples contain up to 0.25 percent Cu and 0.17 percent Mo (Nokleberg and others, 1997). Nokleberg and others (1997) describe the site as: a large area of dessiminated sulfides in, and adjacent to an early Tertiary dacite porphyry. Orange gossan covers over a 3 square kilometer area with extensive stockwork and zones of sericite and sulfides. The dacite porphyry has undergone extensive propylitic and silicic alteration. Potassium-argon ages for host rock range from 56.2 to 62.7 m.y. indicating a Tertiary age for these rocks (Eakins and others, 1978). ? Moxham and Nelson (1952) reported the 'Thompson silver-lead claims' occur near here and consist of arsenopyrite with a little galena (argentiferous?), chalcopyrite, sphalerite, and pyrite in a gangue of calcite and rhodochrosite. This mineralization was reported to occur in a 183 m wide shear zone in granitic rock (but authenticity unknown).
  • Age = Tertiary or younger; potassium-argon ages for the host rock range from 56.2 to 62.7 m.y. indicating a Tertiary age for these rocks (Eakins and others, 1978).
  • Age = Chron age is for Host Rock.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant Yes

Comments on exploration

  • Status = Inactive

Mining district

District name Bristol Bay

Comments on the production information

  • Production Notes = No production

Comments on the reserve resource information

  • Reserves = Estimated reserves of 91 million tonnes (Nokleberg and others, 1997).

Comments on the workings information

  • Workings / Exploration = Samples taken by Resource Associates of Alaska (1976) were anomalous in copper and silver. Grab samples contain up to 0.25 percent Cu and 0.17 percent Mo (Nokleberg and others, 1997).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Nelson and others, 1985

General comments

Subject category Comment text
Deposit Model Name = Porphyry Cu or Polymetallic vein (Cox and Singer, 1986; model 17 or 22c)
Deposit Other Comments = Older descriptions are of questionable reliability. Locality 4 of Cobb (1972) probably the same as locality 3 of MacKevett and Holloway (1977), the Thompson claims. Site is in Lake Clark National Park and Preserve.
Deposit Reference point located near Thompson AG-PB-ZN claims. AU-MO occurrences nearby. Gleason Prospect (B542) assumed to be in the same area as the Thompson prospects.

Reporter information

Type Date Name Affiliation Comment
Reporter 14-JUL-95 DWB U.S. Bureau of Mines
Reporter 15-JUN-98 M.L. Miller U.S. Geological Survey
Reporter 15-JUN-98 D.P. Bickerstaff U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.