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  3. Mineral Resource Data System (MRDS)

Unnamed (on upper Sheep River)

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

Geologic information

Identification information

Deposit ID 10001437
MRDS ID A012186
Record type Site
Current site name Unnamed (on upper Sheep River)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -149.08271, 62.11957 (WGS84)
Relative position Along the south fork of Sheep River, 4.5 miles upstream from the confluence of the south fork of Sheep River with Sheep River. Locality 98 of Csejtey and Miller (1978) and locality 98 of Singer and others (1978). Accurate within 2,000 feet.

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Talkeetna Mountains A-5(quadrangle 1:63,360 scale)

Talkeetna Mountains SW(quadrangle 1:100,000 scale)

Talkeetna Mountains(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Talkeetna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Gold Secondary
Lead Secondary

Materials information

Materials Type of material
Malachite Ore

Alteration

  • (Local) Oxidation of Cu-minerals.

Nearby scientific data

(1) -149.08271, 62.11957
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Float sample of Late Cretaceous and Paleocene tonalite contained malachite-staining. Analysis of the float sample yielded 10 ppm Ag, 0.35 ppm Au, 5,000 ppm Cu, and 10 ppm Pb (Miller and others, 1978).
  • Age = Late Cretaceous or younger, based on age of host.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Yentna

Comments on the workings information

  • Workings / Exploration = Extent of exploration is apparently only the collection of a surface grab sample. Analysis of the float sample yielded 10 ppm Ag, 0.35 ppm Au, 5,000 ppm Cu, and 10 ppm Pb (Miller and others, 1978).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Miller and others, 1978

Reporter information

Type Date Name Affiliation Comment
Reporter 05-AUG-98 Bickerstaff, Damon 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.