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  3. Mineral Resource Data System (MRDS)

Mendenhall Prospect

Occurrence in Alaska, United States with commodities Gold, Lead
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

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)

Site location context

Political divisions (FIPS codes)

Juneau(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Juneau B-2(quadrangle 1:63,360 scale)

Juneau SE(quadrangle 1:100,000 scale)

Juneau(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lynn Canal(hydrologic unit)

Northern 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

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

Economic information

Ore body information

  • Length 30.48M

Comments on the geologic information

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

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

Bibliographic references

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

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

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