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

Natural Arches (north of Bering 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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10307243
Record type Site
Current site name Natural Arches (north of Bering Glacier)

Geographic coordinates

Geographic coordinates: -142.4579, 60.49586 (WGS84)
Relative position This occurrence is at the west end of the ridge between Bagley Ice Field and upper Bering Glacier. The map site is at an elevation of about 4,400 feet in the SW1/4 section 8, T 16 S, R 17 E, of the Copper River Meridian. This is locality 3 of Cobb (1972 [MF 373]; 1979 [OF 79-1246]). The location is probably accurate to within one-half mile.

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bering Glacier B-4(quadrangle 1:63,360 scale)

Bering Glacier SE(quadrangle 1:100,000 scale)

Bering Glacier C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Bering Glacier(hydrologic unit)

Gulf of Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Azurite Ore
Malachite Ore
Copper Ore
Quartz Gangue

Alteration

  • (Local) Oxidation.

Mineral occurrence model information

Model code 87
USGS model code 23
Deposit model name Basaltic Cu (BC name is Volcanic redbed Cu)
Mark3 model number 118

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (oldest) Paleocene

Nearby scientific data

(1) -142.4579, 60.49586
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = At this occurrence, native copper occurs in mafic volcanic rocks, and azurite and malachite occur in quartz veins that cut the volcanic rocks (Brabb and Miller, 1962). The volcanic rocks are part of the Lower Tertiary Orca Group (Hudson and Plafker, 1982).
  • Age = Tertiary. The mineralization postdates the Early Tertiary age of the host volcanic rocks.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Yakataga

Comments on the workings information

  • Workings / Exploration = Reconnaissance surface observations have been completed at this locality (Brabb and Miller, 1962).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Brabb and Miller, 1962

General comments

Subject category Comment text
Deposit Model Name = Native copper in mafic volcanic rocks.
Deposit Other Comments = This occurrence is very close to the southern boundary of the Wrangell-St. Elias National Park.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-DEC-01 Travis L. Hudson Applied Geology

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.