Lloyd Prospect

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

Geologic information

Identification information

Deposit ID 10000622
MRDS ID A011232
Record type Site
Current site name Lloyd Prospect
Related records 10185319

Geographic coordinates

Geographic coordinates: -150.74317, 63.56068 (WGS84)
Location accuracy 500(meters)
Relative position E. FORK OF GLEN CREEK NEAR MOUTH
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Zinc Secondary

Comments on the commodity information

  • GOLD REPORTED TO USGS INVESTIGATOR: NO FIRST HAND INFORMATION

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Sphalerite Ore
Magnetite Gangue
Pyrite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Birch Creek;Birch Creek
    Rock description Birch Creek;Birch Creek

Nearby scientific data

(1) -150.74317, 63.56068

Ore body information

  • Thickness 3.05M
    Length 45.72M

Comments on the geologic information

  • POSSIBLE SUBMARINE VOLCANOGENIC DEPOSIT; PREMETAMORPHIC SULFIDES PRESENT IN QUARTZITE BANDS INTERBEDDED AND FOLDED WITH CHLORITIC GREENSTONE SCHIST OF BIRCH CREEK FORMATION

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Kantishna

Land status

Ownership category National Park

Workings at the site

  • Type of workings Underground
    Length 12.19M

Comments on the workings information

  • 40 FT ADIT

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011232

Bibliographic references

  • Deposit

    USGS BULL 687, P.99

  • Deposit

    ADGGS OFR 98, P.36

  • Deposit

    USGS OFR 77-169 A, P.45 LOC. 16

General comments

Subject category Comment text
Deposit VEIN QUARTZ IN QUARTZITE BAND 3 TO 10 FT THICK CARRIES SULPHIDES AND POSSIBLY GOLD; APPEARS TO BE PREMETAMORPHIC AS BANDS OF SULPHIDES ARE FOLDED WITH COUNTRY ROCK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-84 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 13-APR-94 Mosier, Dan U.S. Geological Survey