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

Unnamed (east of lower Nabesna Glacier)

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. Host and associated rocks
  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 10000760
MRDS ID A011401
Record type Site
Current site name Unnamed (east of lower Nabesna Glacier)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -142.84364, 62.03496 (WGS84)
Relative position Best location: Richter, 1973, USGS I-789, loc. 18. Accurate within 100 ft radius

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nabesna A-4(quadrangle 1:63,360 scale)

Nabesna SW(quadrangle 1:100,000 scale)

Nabesna C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Wrangell-St. Elias National Preserve(National Preserve)

National Preserve NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Azurite Ore
Malachite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Nikolai Greenstone
    Rock description Nikolai Greenstone
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt

Nearby scientific data

(1) -142.84364, 62.03496
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Zone of malachite- and azurite-stained amygdaloidal basalt 200 ft long and 30 ft wide. Basalt is part of the Triassic Nikolai Greenstone.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Chip sample across 50 ft of Cu-stained basalt ran: >20,000 ppm Cu and 1.5 ppm Ag (USGS OF 398, sample 231). Type of workings: surface

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Richter, 1973, USGS I-789

General comments

Subject category Comment text
Deposit Model Name = Lode: volcanogenic, supergene

Reporter information

Type Date Name Affiliation Comment
Reporter 07-FEB-1997 Leonard, K.R. U.S. Geological Survey
Reporter 07-FEB-1997 Elliott, R.L. U.S. Geological Survey
Reporter 07-FEB-1997 Richter, D.H. 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.