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Brady Glacier Deposit

Occurrence in Alaska, United States with commodities Nickel, Copper, Cobalt, PGE
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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. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10039298
MRDS ID M046921
Record type Site
Current site name Brady Glacier Deposit

Geographic coordinates

Geographic coordinates: -136.9296, 58.55301 (WGS84)
Relative position SE ALASKA, No latitude-longitude reported. Given lat-lon is for centroid of second order political subdivision boundary.

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Fairweather C-3(quadrangle 1:63,360 scale)

Mount Fairweather NE(quadrangle 1:100,000 scale)

Mount Fairweather(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
Nickel Critical Primary
Copper Primary
Cobalt Critical Secondary
PGE Critical Tertiary

Comments on the commodity information

  • VALUES ARE PERMISSIVE OF MANTLE DERIVATION FOR THE S AND C BUT ARE NOT DIAGNOSTIC OF SUCH ORIGIN.

Materials information

Materials Type of material
Chalcopyrite Ore
Chromite Ore
Ilmenite Ore
Pentlandite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Rock unit name Crillon-La Perouse Layered Gabbro
    Rock description Crillon-La Perouse Layered Gabbro
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite

Nearby scientific data

(1) -136.9296, 58.55301
ListMap

Economic information

Comments on the geologic information

  • ASSAYS AND CONDUCTIVITY MEASUREMENTS ON CORE SAMPLES SUGGEST IN SOME AREAS 130 - 200 M. THICKNESS ROCK MAY HOST INTERCONNECTING SULPHIDE NETWORK AVERAGING 70.4 % NI. AND 0.3 % CU.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the reserve resource information

  • DISS. ORE AVERAGES 0.20 PPM PGM AND MASS. ORE 1.30 PPM PGM. MINERALS BEARING PGM HAVE NOT BEEN FOUND.

Reference information

Bibliographic references

  • Deposit

    CZAMANSKE, G. K. ETAL, APRIL 25 - 27 , 1977 , GEOL. ASSN. CA. ETAL, ANNUAL MEETINGS: GEOL. ASSN. CA., VANCOUVER, B.C., PROGRAM WITH ABSTRACTS VOL.

  • Reserve-Resource

    CZAMANSKE, G.K. ETAL, APRIL 25 - 27 , 1977 , GEOL. ASSN. CA. ETAL., ANNUAL MEETINGS; GEOL. ASSN. CA., VANCOUVER, B.C, PROG. W/ABSTRACTS VOL. 2

General comments

Subject category Comment text
Deposit DISSEMINATED, INTERSTITIAL, INFREQUENTLY MASSIVE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1978 Blair, Will N. 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.