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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Unnamed (west bank of Togiak River)

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

Geologic information

Identification information

Deposit ID 10000258
MRDS ID A010300
Record type Site
Current site name Unnamed (west bank of Togiak River)
Related records 10209474, 10233884

Geographic coordinates

Geographic coordinates: -160.17269, 59.29929 (WGS84)
Relative position This occurrence is close to the west bank of Togiak River. It is less than a mile downstream of the Kassianmute village site and about 3 miles upstream of the mouth of Pungokepuk Creek, an east tributary to Togiak River. The map site is in the NE1/4 of section 23, T 10 S, R 65 W, of the Seward Meridian. It is locality 2 of Hoare and Cobb (1977) and of Cobb and Condon (1972).

Site location context

Political divisions (FIPS codes)

Dillingham(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Goodnews Bay B-4(quadrangle 1:63,360 scale)

Goodnews Bay SE(quadrangle 1:100,000 scale)

Goodnews Bay C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Togiak(hydrologic unit)

Nushagak River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Togiak National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

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

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Sphalerite Ore
Quartz Gangue

Mineral occurrence model information

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) Late Cretaceous
    Stratigraphic age (oldest) Late Triassic

Nearby scientific data

(1) -160.17269, 59.29929
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = At this occurrence, Jurassic or Cretaceous pillow basalt is cut by a 12- to 15-inch-wide, at least 25-foot-long, quartz vein containing coarsely crystalline sphalerite, minor chalcopyrite, and pyrite (Hoare and Coonrad, 1961). A sample of oxidized sphalerite-rich vein material and its altered volcanic hostrock contained 3 ppm Ag, 110 ppm As, 0.35 ppm Au, 390 ppm Cd, 510 ppm Cu, 10.4 ppm Hg, greater than 5,000 ppm Mn, 6.8 ppm Mo, and greater than 1,400 ppm Zn (Kilburn and others, 1992). The occurrence is in lowlands along the Togiak River. Bedrock exposures are minimal, but parts of a gabbro intrusive are exposed across the river from this locality.
  • Age = Post Early Cretaceous. The host pillow basalt is part of a Jurassic to Lower Cretaceous sedimentary and volcanic assemblage (Hoare and Coonrad, 1978).
  • Age = Host rock is Early Cretaceous - Jurassic.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Bristol Bay Region

Comments on the workings information

  • Workings / Exploration = This occurrence has been reconnaissance mapped and sampled (Kilburn and others, 1992).

Reference information

Bibliographic references

  • Deposit

    Hoare, J.M., and Coonrad, W.L., 1961, Geologic map of the Goodnews quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-339, scale 1:250,000.

  • Deposit

    Cobb, E.H., and Condon, W.H., 1972, Metallic mineral resources map of the Goodnews quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-447, scale 1:250,000.

  • Deposit

    Hoare, J.M., and Cobb, E.H., 1977, Mineral occurrences (other than mineral fuels and construction materials) in the Bethel, Goodnews, and Russian Mission quadrangles, Alaska: U.S. Geological Survey Open-File Report 77-156, 98 p.

  • Deposit

    Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, two sheets, scale 1:250,000.

  • Deposit

    Kilburn, J., Box, S.E., Goldfarb, R.J., and Gray, J.E., 1992, Geochemically anomalous areas in the eastern Goodnews Bay quadrangle, southwest Alaska, in Bradley, D. C., and Ford, A. B., eds., The U.S. Geological Survey in Alaska, Accomplishments in 1990: U. S. Geological Survey Bulletin 1999, p. 156-162.

Comments on the references

  • Primary Reference = Hoare and Coonrad, 1961

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c)

Reporter information

Type Date Name Affiliation Comment
Reporter 20-MAR-2001 Travis L. Hudson Applied Geology

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.