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Mendenhall Prospect

Occurrence in Alaska, United States with commodities Gold, Lead
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Geologic information

Identification information

Deposit ID 10001291
MRDS ID A012025
Record type Site
Current site name Mendenhall Prospect
Related records 10112580

Geographic coordinates

Geographic coordinates: -134.59591, 58.42225 (WGS84)
Location accuracy 1000(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • BEST LOCATION: USGS BULL 502, PLATE II, LOC. 22 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
Lead Secondary

Materials information

Materials Type of material
Galena Ore
Albite Gangue
Calcite Gangue
Pyrrhotite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -134.59591, 58.42225
ListMap

Ore body information

  • Length 30.48M

Comments on the geologic information

  • SLATE INTERBEDDED WITH CHLORITIC SCHISTS AND CUT BY AMPHIBOLITE DIKE.

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/Eagle River

Land status

Ownership category State

Workings at the site

  • Type of workings Surface/Underground
    Length 35.05M

Comments on the workings information

  • EXPLORED BY 30 FT OPEN CUT AND CROSSCUT TUNNEL 85 FT LONG PRIOR TOABOUT 1910; 7 UNPATENTED LODE CLAIMS

Comments on development

  • ACTIVE IN EARLY 1900'S

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012025

Bibliographic references

  • Deposit

    USGS BULL 502, P. 59-60

  • Deposit

    USGS OFR 85-717, P. 155

  • Other Database

    BAG-OFR-85-717-142

General comments

Subject category Comment text
Deposit 85-100 FT WIDE STRINGER LODE OF QUARTZ VEINLETS SPARSELY MINERALIZED WITH PYRRHOTITE, ARSENOPYRITE AND GALENA; ARSENOPYRITE DISSEMINATED IN SLATE COUNTRY ROCK ADJACENT TO STRINGERS; NEARBY 100 FT WIDE AMPHIBOLITE DIKE CONTAINS IRREGULAR ALBITE-CALCITE VEINLETS CARRYING PYRRHOTITE AND FREE GOLD
Deposit SEE ALSO: PULL AND STEPHENS, PATTON ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-85 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-94 Mosier, Dan U.S. Geological Survey