Castle Island Mine

The Castle Island Mine is a barium-barite mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Castle Island Mine
Secondary: Duncan Canal

Commodity

Primary: Barium-Barite
Tertiary: Silver
Tertiary: Copper
Tertiary: Lead
Tertiary: Zinc
Tertiary: Gold

Location

State: Alaska
District: Petersburg District

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Stratiform
Operation Type: Unknown
Year First Production: 1963
Year Last Production: 1980
Discovery Year: 1925
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: M

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Barite
Ore: Galena
Gangue: Sphene
Gangue: Graphite
Gangue: Magnetite

Comments

Comment (Deposit): Discovery Year: EARLY 1900'S

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

Comment (Commodity): ORE MATERIAL RUNS ABOUT 90% BARITE

Comment (Location): PATENTED CLAIMS

Comment (Development): LAST PRODUCTION PROBABLY NO LATER THAN 1980. PLANT REMOVED FROM SITE BY SUMMER 1982.

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

References

Reference (Production): ADGGS SPEC REPT 31

Reference (Deposit): ADGGS SPEC REPT 31, P 46

Reference (Deposit): USGS B 592, P. 109-113

Reference (Deposit): USGS OFR 78-870, P. 10-11

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