Castle Island Mine

Past Producer in Alaska, United States with commodities Barium-Barite, Zinc, Lead, Silver, Gold, Copper

Geologic information

Identification information

Deposit ID 10100940
MRDS ID A010666
Record type Site
Current site name Castle Island Mine
Alternate or previous names Duncan Canal
Related records 10258759

Geographic coordinates

Geographic coordinates: -133.16299, 56.65252 (WGS84)
Relative position CENTRAL DUNCAN CANAL
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • PATENTED CLAIMS

Commodities

Commodity Importance
Barium-Barite Primary
Zinc Tertiary
Lead Tertiary
Silver Tertiary
Gold Tertiary
Copper Tertiary

Comments on the commodity information

  • ORE MATERIAL RUNS ABOUT 90% BARITE

Materials information

Materials Type of material
Barite Ore
Galena Ore
Sphalerite Ore
Graphite Gangue
Magnetite Gangue
Sphene Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -133.16299, 56.65252

Comments on the geologic information

  • MOST WRITERS HAVE CALLED DEPOSIT & HOST ROCKS DEVONIAN BECAUSE OF PROXIMITY TO DEVONIAN FOSSIL SITES. RECENT WORK SUGGESTS TRIASSIC AGE MAY BE MORE LIKELY.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both metallic and non-metallic
Deposit size Medium
Significant No
Discovery year 1925
Discovery method Ore-Mineral In Place
Year of first production 1963
Year of last production 1980

Mining district

District name Petersburg District

Comments on the workings information

  • DEPOSIT MOSTLY BELOW SEA LEVEL. WORKED WITH DRILLING BARGE AND DRAG LINE (FROM SHORE). UNDERWATER MINING PROBABLY CONFINED WITHIN 100 FT BELOW SEA LEVEL

Comments on development

  • LAST PRODUCTION PROBABLY NO LATER THAN 1980. PLANT REMOVED FROM SITE BY SUMMER 1982.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010666

Bibliographic references

  • Deposit

    USGS OFR 78-870, P. 10-11

  • Deposit

    USGS B 592, P. 109-113

  • Deposit

    ADGGS SPEC REPT 31, P 46

  • Production

    ADGGS SPEC REPT 31

General comments

Subject category Comment text
Deposit Discovery Year: EARLY 1900'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-84 Elliott, R. L. U.S. Geological Survey PARSED DATA INTO WORKINGS MULTIVALUED FIELDS
Editor 13-APR-94 Mosier, Dan U.S. Geological Survey
Editor 30-MAY-95 Waller, Nichelle (Mosier, Dan) U.S. Geological Survey