Atom Marietta Prospect

Occurrence in Alaska, United States with commodities Uranium, Thorium

Geologic information

Identification information

Deposit ID 10000241
MRDS ID A010279
Record type Site
Current site name Atom Marietta Prospect
Related records 10136716

Geographic coordinates

Geographic coordinates: -132.12955, 54.91362 (WGS84)
Elevation 213
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Uranium Primary
Thorium Primary

Comments on the commodity information

  • OTHER RADIOACTIVE MINERALS ARE PROBABLY PRESENT

Materials information

Materials Type of material
Brannerite Ore
Uraninite Ore
Calcite Gangue
Chlorite Gangue
Hematite Gangue
Quartz Gangue

Alteration

  • (Local) Dacite Is Strongly Albitized

Analytical data

Result CHEMICAL ANALYSIS YIELDED 0.25-2.8% U, 0.13-1%TH

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite > Peralkaline Granite
    Rock unit name Bokan Mountain Granite
    Rock description Bokan Mountain Granite
    Chronological age 186
    Dating method K-Ar
    Stratigraphic age (youngest) Middle Jurassic
    Chronological age 181
    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
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock

Nearby scientific data

(1) -132.12955, 54.91362

Ore body information

  • Strike N 5 W
    Dip 80 SW
    Thickness 0.91M

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1955
Discoverer Dotson And Blazek

Mining district

District name Ketchikan District

Land status

Ownership category National Forest

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010279

Bibliographic references

  • Deposit

    USGS BULLETIN 1154, P.73-74

  • Deposit

    USGS BULLETIN 1155, P.30-31

  • Deposit

    USGS OPEN FILE 78-863, P.6-8

General comments

Subject category Comment text
Deposit TWO SHEAR ZONES 1.5 FT THICK ON PARALLEL FAULTS

Reporter information

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