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

Unnamed (near Mears Glacier)

Occurrence in Alaska, United States with commodities Silver, Arsenic, Molybdenum, 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. Alteration
  8. Mineral occurrence model information
  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 10003440
MRDS ID A106197
Record type Site
Current site name Unnamed (near Mears Glacier)

Geographic coordinates

Geographic coordinates: -147.49259, 61.18958 (WGS84)
Relative position West side of Mears Glacier, 2.2 miles west-northwest of Mount Grosvenor summit. Accurate within 2,000 ft. Locality A-44 of 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

Anchorage A-2(quadrangle 1:63,360 scale)

Anchorage SE(quadrangle 1:100,000 scale)

Anchorage(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
Silver Primary
Arsenic Critical Primary
Molybdenum Primary
Copper Secondary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Oxidation of Fe and Cu minerals.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -147.49259, 61.18958
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Late Cretaceous metasedimentary rocks of the Valdez Group are cut by a 1 ft wide quartz vein. The vein is heavily limonite-stained and has local copper staining. Pyrite is the only sulfide mineral observed. A USGS grab sample contained 30 ppm Ag, 700 ppm As, and 10 ppm Mo (Jansons and others, 1984).
  • Age = Late Cretaceous or younger; veins cuts Late Cretaceous metasedimentary rocks of the Valdez Group.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Prince William Sound

Comments on the workings information

  • Workings / Exploration = Jansons and others (1984) reported a USGS grab sample contained 30 ppm Ag, 700 ppm As, and 10 ppm Mo.

Reference information

Bibliographic references

  • Deposit

    Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, Southcentral Alaska: U.S. Bureau of Mines Open-File Report 5-84, 218 p., 2 sheets, scale 1:250,000.

Comments on the references

  • Primary Reference = Jansons and others, 1984

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 30-JUL-1998 D.P. Bickerstaff U.S. Geological Survey
Reporter 30-JUL-1998 S.W. Huss 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.