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  3. Mineral Resource Data System (MRDS)

Unnamed Covering Most of Castle Islands

Unknown in Alaska, United States with commodity Barium-Barite
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Mineral occurrence model information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10003663
MRDS ID A106433
Record type Site
Current site name Unnamed Covering Most of Castle Islands

Geographic coordinates

Geographic coordinates: -133.16882, 56.65946 (WGS84)
Relative position SEE LOCATION COMMENTS

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Petersburg C-4 NW(quadrangle 1:24,000 scale)

Petersburg N(quadrangle 1:100,000 scale)

Petersburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central 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

  • COORDINATES ARE AT THE CENTER OF A BLOCK OF 22 CLAIMS INCLUDING AND NORTHWEST OF THE CASTLE ISLAND BARITE MINE (PE026). COMPRISES MOST OF THE CASTLE ISLANDS. MUCH OF THE CLAIMED AREA IS PROBABLY UNDERWATER, BUT NOTE THAT MUCH OF THE MINING AT THE CASTLE ISLAND MINE ITSELF WAS CARRIED ON UNDERWATER.

Commodities

Commodity Importance
Barium-Barite Critical Primary

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Nearby scientific data

(1) -133.16882, 56.65946
ListMap

Economic information

Ore body information

  • General form SEE DEPOSIT DESCRIPTION COMMENTS

Economic information about the deposit and operations

Commodity type Non-metallic
Significant No

Comments on exploration

  • Status = Active?

Mining district

District name Kupreanof

Comments on the workings information

  • OTHER THAN THE CASTLE ISLAND BARITE MINE ITSELF, THERE IS APPARENTLY NO SURFACE EXPLORATION BEYOND GEOLOGIC MAPPING AND SAMPLING OF OUTCROPS.

Reference information

Bibliographic references

  • Deposit

    U.S. Bureau of Mines, 1980, Claim map, Petersburg quadrangle, Alaska: U.S. Bureau of Mines Map No. 117, 1 sheet, scale 1:250,000.

  • Deposit

    Grybeck, D. J., Berg, H. C., and Karl, S. M., 1984, Map and description of the mineral deposits in the Petersburg and eastern Port Alexander quadrangles: U.S. Geological Survey Open-File Report 84-837, 86 p., 1 sheet, scale 1:250,000.

  • Deposit

    Brew, D.A., 1997, Reconnaissance geologic map of the Petersburg C-4 quadrangle, southeastern Alaska: U. S. Geological Survey Open-File Report 97-156-J, scale 63,360, one sheet, 21 p. pamphlet.

General comments

Subject category Comment text
Deposit SEE DESCRIPTION OF THE CASTLE ISLAND BARITE MINE (PE026) WHICH IS WITHIN THIS CLAIM BLOCK. THE BLOCK ENCOMPASSES POTENTIAL SUBMARINE EXTENSIONS OF THE MINERALIZATION FROM THAT MINE OR POTENTIAL FOR NEW DEPOSITS OF THAT TYPE OF MINERALIZATION. THE GEOLOGY OF THE VARIOUS SMALL ISLANDS THAT COMPRISE THE CASTLE ISLANDS AND ARE COVERED BY THIS CLAIM BLOCK IS COMPLICATED BY FAULTING. THE ROCKS INCLUDE DEVONIAN FOSSILIFEROUS LIMESTONE; TRIASSIC HYD GROUP FELSIC AND INTERMEDIATE FLOWS AND BRECCIAS, LIMESTONE, AND ARGILLITE, THAT HOST VOLCANOGENIC MASSIVE SULFIDE DEPOSITS IN THE AREA; AND QUATERNARY BASALT (BREW, 1997 [OF 97-156-J]).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1998 Berg, H. C. (Grybeck, D. J.) 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.