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Jack Bay #2

Prospect in Alaska, United States with commodities Gold, Copper
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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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10307361
Record type Site
Current site name Jack Bay #2

Geographic coordinates

Geographic coordinates: -146.43254, 60.98459 (WGS84)
Relative position The site is at an elevation of 150 feet in a river valley southeast of Jack Bay, and about 2 miles upstream from the head of the bay. It is in the SW1/4 sec. 23, T. 10 S., R. 7 W., of the Copper River Meridian. The location is accurate to within 1000 ft. This prospect is shown as C-96 in Jansons and others (1984).

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cordova D-7(quadrangle 1:63,360 scale)

Cordova NW(quadrangle 1:100,000 scale)

Cordova(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eastern Prince William Sound(hydrologic unit)

Prince William Sound(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chugach National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrrhotite Ore
Quartz Gangue

Mineral occurrence model information

Model code 274
USGS model code 36a.1
Deposit model name Low-sulfide Au-quartz vein, Chugach-type
Mark3 model number 26

Nearby scientific data

(1) -146.43254, 60.98459
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The area of this prospect is underlain by Upper Cretaceous Valdez Group metasedimentary rocks (Nelson and others, 1985). A well-defined, 6-inch- wide, quartz vein in slate contains chalcopyrite and pyrrhotite . One grab sample contained 140 ppm Cu and 0.006 oz. Au/ton (Jansons and others, 1984). Gold mineralization in veins cutting the rocks of the Valdez Group is interpreted by Goldfarb and others (1992) to be the result of Tertiary metamorphism.
  • Age = Tertiary based on the age of the mineralizing event (Goldfarb and others, 1992).

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name Copper River

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Jansons and others, 1984

General comments

Subject category Comment text
Deposit Model Name = Chugach-type low-sulfide Au-quartz veins (Bliss, 1992; model 36a.1; Goldfarb and others, 1986)

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-00 S.W. Nelson 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.