Big Ledge

Prospect in Alaska, United States with commodities Copper, Nickel, Zinc

Geologic information

Identification information

Deposit ID 10282613
MRDS ID A013295
MAS/MILS ID 0021140015
Record type Site
Current site name Big Ledge
Alternate or previous names Mosquito Ledge, Lost Prize, Coronado Copper & Zinc
Related records 10002377

Geographic coordinates

Point of reference Claim
Geographic coordinates: -134.9839, 57.80533 (WGS84)
Elevation 122
Location accuracy 1000(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Copper River 047 S 064 E 12 NESWSW Alaska

Commodities

Commodity Importance
Copper Tertiary
Nickel Primary
Zinc Tertiary

Nearby scientific data

Claim (1) -134.9839, 57.80533

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category Federal

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0021140015
USGS Mineral Resources Data System MRDS A013295 MAS references MRDS

Bibliographic references

  • Ownership

    ALASKA KARDEX 114-034

  • Deposit

    B773d pp. 107-108

  • Deposit

    B800 pp. 348-349

  • Deposit

    MR114-3 p. 2

  • Deposit

    GC6 p. 37

  • Deposit

    B1246 p. 145

  • Deposit

    MF467

General comments

Subject category Comment text
Deposit STAKED 1923, ABANDONED, RESTAKED 1955. ACTIVE THROUGH 1957. INACTIVE 1976. VERY LITTLE DEVELOPMENT WORK. COMPOSED OF DISSEMINATED PYRRHOTITE, CHALLOPYRITE, PENT- LANDITE,SPHALERITE,PYRITE IN A MAFIC DIKE. SULFIDES ALSO AS VEINLETS & BLEBS IN SHEAR ZONES & QTZ-CALCITE VEINS. VALUES APPARENTLY TOO LOW TO CONTINUE DEVELOPMENT.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-FEB-1988 Map U.S. Bureau of Mines