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  3. Mineral Resource Data System (MRDS)

Unnamed (northwest of terminus of Nabesna Glacier)

Prospect in Alaska, United States with commodities Lead, Zinc, Gold, Silver, 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 10093987
MRDS ID A011390
Record type Site
Current site name Unnamed (northwest of terminus of Nabesna Glacier)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -142.95255, 62.19969 (WGS84)
Relative position Best location: Richter, 1973, USGS I-789, loc. 5. 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
Lead Primary
Zinc Critical Primary
Gold Primary
Silver Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -142.95255, 62.19969
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Quartz veins, up to 1 ft thick, containing sphalerite, galena and minor chalcopyrite in recrystallized Triassic limestone near contact with Cretaceous granodiorite stock.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Small prospect pits dug on veins. Chip sample across veins assayed 2.4 ppm Au, 200 ppm Ag, >20,000 ppm Pb, > 10,000 ppm Zn, >20,000 ppm Cu (USGS OF 398, sample 587). Type of workings: surface.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Model Name = lode, contact metasomatic

Reporter information

Type Date Name Affiliation Comment
Reporter 06-FEB-1997 Leonard, K.R. U.S. Geological Survey
Reporter 06-FEB-1997 Elliott, R.L. U.S. Geological Survey
Reporter 06-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.