Wennie Prospect, Lazo Group

Occurrence in Alaska, United States with commodities Thorium, Uranium, REE, Fluorine-Fluorite
Warning: This record lacks important information: bibliographic references, which we consider necessary for a comprehensive report.
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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10000240
MRDS ID A010277
Record type Site
Current site name Wennie Prospect, Lazo Group

Geographic coordinates

Geographic coordinates: -132.17955, 54.91917 (WGS84)
Elevation 244
Relative position 5400 FT N78W FROM SUMMIT BOKAN MOUNTAIN

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
Thorium Primary
Uranium Primary
REE Critical Tertiary
Fluorine-Fluorite Critical Tertiary

Materials information

Materials Type of material
Monazite Ore
Parisite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Feldspars In Country Rock Are Altered To Clay Minerals And Iron Stained

Analytical data

Result CHEMICAL ANALYSIS OF HIGHLY RADIOACTIVE SAMPLE: 7.17%TH, 0.26%U

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

Nearby scientific data

(1) -132.17955, 54.91917

Economic information

Ore body information

  • Strike N60W
    Dip 80NE
    Thickness 0.3M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No
Discovery year 1955

Mining district

District name Ketchikan District

Land status

Ownership category National Forest

Comments on the workings information

  • SHALLOW OPEN CUTS

Reference information

General comments

Subject category Comment text
Deposit MINERALIZATION IN FRACTURE SETS AND IN ADJACENT VEINLETS. SECONDARY FRACTURE SET STRIKES EAST, DIPS GOS. ANOMALOUS RADIOACTIVITY OF 5.5 MILLIROENTGENS PER HOUR DETECTED

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.

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.