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Ross-Adams Mine

Past Producer in Alaska, United States with commodities Uranium, Thorium, REE, Niobium (Columbium), Beryllium, Lead, Fluorine-Fluorite
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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. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10000239
MRDS ID A010276
Record type Site
Current site name Ross-Adams Mine
Related records 10234039

Geographic coordinates

Geographic coordinates: -132.14066, 54.91084 (WGS84)
Elevation 290

Site location context

Political divisions (FIPS codes)

Prince of Wales-Hyder(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dixon Entrance D-1(quadrangle 1:63,360 scale)

Dixon Entrance(quadrangle 1:100,000 scale)

Dixon Entrance(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Prince of Wales(hydrologic unit)

Southern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Uranium Primary
Thorium Tertiary
REE Critical Tertiary
Niobium (Columbium) Critical Tertiary
Beryllium Critical Tertiary
Lead Tertiary
Fluorine-Fluorite Critical Tertiary

Comments on the commodity information

  • LIST OF MINERALS IS PARTIAL

Materials information

Materials Type of material
Brannerite Ore
Galena Ore
Parisite Ore
Uraninite Ore
Acmite Gangue
Albite Gangue
Cordierite Gangue
Pyrite Gangue
Quartz Gangue
Riebeckite Gangue
Tourmaline Gangue
Zircon Gangue

Analytical data

Result CHEMICAL ANALYSIS OF ORE GAVE 0.18-3.2% U AND AVERAGED 1.08% U, 0.76-566% THE AND AVERAGED 2.65%

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Bokan Mountain Granite
    Rock description Bokan Mountain Granite
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite > Peralkaline Granite
    Stratigraphic age (youngest) Middle Jurassic
    Chronological age 186
    Dating method K-Ar
    Stratigraphic age (youngest) Middle Jurassic
    Chronological age 171
    Dating method U-Pb (zircon)
    Type of media Zircon
    Stratigraphic age (youngest) Middle Jurassic
    Chronological age 181
    Dating method K-Ar

Nearby scientific data

(1) -132.14066, 54.91084
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Many Steep Faults Cut Ore Body

Ore body information

  • General form PIPE
    Thickness 12.19M
    Length 54.86M
    Width 15.24M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Medium
Significant No
Discovery year 1955
Discoverer Don Ross And Kelly Adams
Year of first production 1957
Year of last production 1971

Mining district

District name Ketchikan District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Standard Metals Co.
  • Type Owner
    Owner Kendrick Bay Mining Co.

Comments on the production information

  • ORE WAS EQUALLY RICH IN THORIUM, BUT EXTRACTION METHODS WERE TOO COSTLY AND THORIUM WAS NOT RECOVERED

Comments on the reserve resource information

  • ADITIONAL RESERVES AND RESOURCES HAVE BEEN DISCOVERED IN PLATE 1970'S, BUT TONNAGE AND GRADE ARE UNNAVAILABLE

Comments on the workings information

  • MINING FROM AN OPEN PIT AT FIRST. UNDERGROUND WORKINGS MAY HAVE BEEN DEVELOPED LATER

Comments on development

  • EXPLORATION HAS CONTINUED THROUGH 1982, BUT URANIUM PAKES ARE TOO LOW FOR MINING.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ORE BODY IS A FUSIFORM SHAPED AREA OF MINERAL CONCENTRATION WITHIN IGNEOUS INTRUSION. ORE MINERALS ARE IN VEINLETS AND DISSEMINATIONS WITHIN THIS BODY.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1983 Hirschmann, M. M. (Elliott, R. L.) 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.