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  3. Mineral Resource Data System (MRDS)

Mt. Aspid

Occurrence in Alaska, United States with commodities Copper, Molybdenum, Gold
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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. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10003282
MRDS ID A106025
Record type Site
Current site name Mt. Aspid

Geographic coordinates

Geographic coordinates: -167.40237, 53.41576 (WGS84)
Relative position East of Chernofski in cirque on Mt. Aspid. Anomaly no. 47 of Christie (1974).

Site location context

Political divisions (FIPS codes)

Aleutians West(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Unalaska SW(quadrangle 1:100,000 scale)

Unalaska SW(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fox Islands(hydrologic unit)

Aleutian Islands(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Gold Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore

Alteration

  • (Local) Local quartz sericitic, potassic, and argillic. Leaching is weak.

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4
Model code 105
USGS model code 25a-d
Deposit model name Epithermal vein, generic
Mark3 model number 119

Nearby scientific data

(1) -167.40237, 53.41576
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = A 3,000 ft by 3,000 ft (900 m by 900 m) color anomaly is developed in hornfelsed volcanic rocks intruded by a quartz-eye porphyry and hornblende quartz diorite. Mineralization is apparently related to the quartz-eye porphyry (+/- plagioclase phenocrysts) and consists of pyrite and trace amounts of chalcopyrite. Fracture-controlled sulfides are generally weakly developed and related to local silicification and/or fracture-controlled sericite. Minor quartz veining occurs. Christie (1974) reported a covered area about 600 ft by 1,000 ft (180 m by 305 m) exists persumably within the color anomaly area, suggesting a target might lie underneath. However, he also stated that fringing outcrops around this covered area were not well mineralized. Fracturing is generally weak.
  • Age = Miocene or younger

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Aleutians

Comments on the workings information

  • Workings / Exploration = Brief reconnaissance mapping and 6 soil or silt samples. Zinc and silver were low, however samples yielded gold to as high as 0.04 ppm (detection limit 0.01 ppm) and copper as high as 330 ppm.

Reference information

Bibliographic references

  • Deposit

    Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)

Comments on the references

  • Primary Reference = Christie, 1974

General comments

Subject category Comment text
Deposit Model Name = Copper porphyry, epithermal gold vein
Deposit Model Number = 17, 25

Reporter information

Type Date Name Affiliation Comment
Reporter 06-MAY-1994 Damon Bickerstaff U.S. Geological Survey
Reporter 06-MAY-1994 F.H. Wilson 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.