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

Unnamed (south of lower Windy Creek)

Occurrence in Alaska, United States with commodity 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. 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 10308758
MRDS ID A011360
Record type Site
Current site name Unnamed (south of lower Windy Creek)

Geographic coordinates

Geographic coordinates: -147.36275, 63.08962 (WGS84)
Relative position This occurrence is at an elevation of about 4,800 feet on a ridge about 2.2 miles south of lower Windy Creek. The site is in the SE1/4 of sec. 16, T. 21 S., R. 2 E., of the Fairbanks Meridian.

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Healy A-1(quadrangle 1:63,360 scale)

Mount Hayes SW(quadrangle 1:100,000 scale)

Healy(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Susitna 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
Copper Primary

Materials information

Materials Type of material
Azurite Ore
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Covellite Ore
Copper Ore
Epidote Gangue
Quartz Gangue
Siderite Gangue

Alteration

  • (Local) Propylitic alteration of greenstone.

Nearby scientific data

(1) -147.36275, 63.08962
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The general area of this occurrence is underlain by the Middle or Upper Triassic Nikolai Greenstone, which consists of massive, subaerial and submarine basalt flows and minor interbedded volcaniclastic sedimentary rocks, aquagene and epiclastic tuff, breccia, argillite, and radiolarian chert (Nokleberg and others, 1992). The occurrence is in greenstone and consists of a small, hydrothermally altered shear zone containing epidote, copper sulfide minerals, and possibly native copper and an iron carbonate mineral. Weathering locally produces malachite and azurite-coated float and encrustations.
  • Age = Triassic or younger.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Valdez Creek

Comments on the workings information

  • Workings / Exploration = Surface chip sampling only.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Glavinovich, 1967

General comments

Subject category Comment text
Deposit Model Name = Hydrothermally altered shear zone.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-2000 D.L. Stevens (Stevens Exploration Management Corporation) Stevens Exploration Management Corporation

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.