Pieper's Purple Prospect

Occurrence in Alaska, United States with commodities Uranium, Fluorine-Fluorite

Geologic information

Identification information

Deposit ID 10000234
MRDS ID A010271
Record type Site
Current site name Pieper's Purple Prospect

Geographic coordinates

Geographic coordinates: -132.15733, 54.90806 (WGS84)
Elevation 366
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Uranium Primary
Fluorine-Fluorite Primary

Comments on the commodity information

  • URANIUM MINERALS NOT SPECIFIED

Materials information

Materials Type of material
Fluorite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite > Peralkaline Granite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock

Nearby scientific data

(1) -132.15733, 54.90806

Controls for ore emplacement

  • Dike Is Near Granite/Metavolcanic Contact

Comments on the geologic information

  • COUNTRY ROCK IS DEVONIAN METAVOLCANIC

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both metallic and non-metallic
Deposit size Small
Significant No
Discoverer Paul Pieper

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 A010271

Bibliographic references

  • Deposit

    USGS BULLETIN 1154, P.93

  • Deposit

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

General comments

Subject category Comment text
Deposit VEINLETS A FEW MILLIMETERS THICK IN DIKE ARE RICH IN FLUORITE AND HAVE WEAK ANOMALOUS RADIOACTIVITY

Reporter information

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