Fremming Prospect

Occurrence in Alaska, United States with commodities Gold, Copper, Lead, Zinc

Geologic information

Identification information

Deposit ID 10094018
MRDS ID A012022
Record type Site
Current site name Fremming Prospect
Related records 10258543

Geographic coordinates

Geographic coordinates: -135.04345, 58.83336 (WGS84)
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • LOCATION OBTAINED FROM UNPUBLISHED MINES AND PROSPECTS MAP; SEE: USGS OFR 85-717, NO. J105 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Lead Secondary
Zinc Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Berners Formation;Jualin Diorite
    Rock description Berners Formation;Jualin Diorite

Nearby scientific data

(1) -135.04345, 58.83336

Ore body information

  • Thickness 1.83M

Comments on the geologic information

  • COUNTRY ROCK IS GREENSCHIST INTRUDED BY SMALL DIORITE DIKES; QUARTZ-CALCITE STRINGERS IN BOTH SCHIST AND DIORITE

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Juneau/Berners Bay

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 135.64M

Comments on the workings information

  • 85 FT SHAFT AND 360 FT CROSSCUT, CONNECTED BY A SHORT DRIFT

Comments on development

  • ACTIVE IN EARLY 1900'S; CLAIMS 1906-1946; 6 PATENTED LODE CLAIMS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012022

Bibliographic references

  • Deposit

    USGS BULL 446, P. 47

  • Deposit

    USGS OFR 85-717, NO. J105

  • Other Database

    BAG-OFR-85-717-105

General comments

Subject category Comment text
Deposit 6 FT WIDE ZONE OF SULFIDE-BEARING SCHIST AND QUARTZ-CALCITE STRINGERS CARRYING PYRITE, CHALCOPYRITE, GALENA, SPHALERITE AND FREE GOLD
Deposit SEE ALSO: JUALIN MINE ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-1994 Mosier, Dan U.S. Geological Survey