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  3. Mineral Resource Data System (MRDS)

Gable Mountain

Occurrence in Alaska, United States with commodities Silver, Copper, Molybdenum, Tungsten
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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 10002217
MRDS ID A013118
Record type Site
Current site name Gable Mountain

Geographic coordinates

Geographic coordinates: -136.53212, 59.06973 (WGS84)
Relative position This occurrence is in Glacier Bay National Park and Preserve at an elevation of about 4,500 feet; it is on a rugged ridge about 0.6 miles southeast of the summit of Gable Mountain. It is in west-central part of section 29, T. 32 S., R. 53 E. of the Copper River Meridian. This location corresponds to number 75 on Plate 3 of Brew and others (1978). Location 14 on Plate 1 of MacKevett and others (1971) and location 4 of Cobb (1972; MF-424) appear to refer to the same occurrence but are shown approximately 1 mile to the northwest of the summit of Gable Mountain. Because of the discrepancies between different authors regarding the location of this occurrence, it should probably be considered accurate only to within about 1 mile.

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Skagway SW(quadrangle 1:100,000 scale)

Skagway C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Glacier Bay(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Glacier Bay National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Molybdenum Secondary
Tungsten Critical Secondary

Materials information

Materials Type of material
Chrysocolla Ore
Malachite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Cretaceous

Nearby scientific data

(1) -136.53212, 59.06973
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The following description is summarized from Brew and others (1978).?At site 1 at an elevation of 4,475 feet, there is a 0.7-foot-wide shear zone which has quartz stringers and copper stains. Below the shear zone there is quartz diorite float that has joint coatings of malachite and chrysocolla. Joint coatings of iron sulfide are reported in quartz diorite at a second site 8,000 - 9,000 feet to the southeast (but the plotted location is about 3,000 - 4,000 feet to the southwest). At site 1, a composite grab sample contained 1,000 ppm copper; a channel sample across the 0.7-foot-wide shear zone contained 250 ppm copper and 7 ppm silver. At Site 2, 7 grab samples contained up to 970 ppm copper, 3 ppm silver, 200 ppm molybdenum, and 150 ppm tungsten. Based on the Cretaceous age of the intrusion (Brew and others, 1978), the mineralization must be Cretaceous or younger in age.
  • Age = The deposit must be Cretaceous or younger in age based on the Cretaceous age of the intrusion that hosts it (Brew and others, 1978).
  • Age = Host rock is Cretaceous.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Juneau (Glacier Bay subdistrict)

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Brew and others, 1978

General comments

Subject category Comment text
Deposit Model Name = There is too little information to assign a model type.
Deposit Other Comments = the deposit is within Glacier Bay National Park and Preserve where exploration and development is restricted.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-FEB-2001 T.C. Crafford T. Crafford & Associates

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.