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Bohemia Basin

Prospect in Alaska, United States with commodities Nickel, Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10067537
MRDS ID W000320
Record type Site
Current site name Bohemia Basin

Geographic coordinates

Geographic coordinates: -136.42705, 57.97832 (WGS84)

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sitka D-8(quadrangle 1:63,360 scale)

Sitka NW(quadrangle 1:100,000 scale)

Sitka W OE(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

Commodities

Commodity Importance
Nickel Critical Tertiary
Copper Tertiary

Comments on the commodity information

  • THERE MAY BE SOME CO PRESENT BUT NO CO ASSAYS WERE REPORTED.

Materials information

Materials Type of material
Chalcopyrite Ore
Pentlandite Ore
Pyrrhotite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Amphibole Schist

Nearby scientific data

(1) -136.42705, 57.97832
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: NICKEL AND COPPER SULFIDES OCCUR AS DISSEMINATIONS OF PENTLANDITE AND CHALCOPYRITE ASSOCIATED WITH PYRRHOTITE IN THE BASAL PART OF A BASIN-SHAPED INTRUSIVE OF NORITE.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Mining district

District name Yakobi Island

Land status

Ownership category National Forest

Reserves and resources

  • Type In-situ
    Estimate year 1973
    Total resources 54000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.3 wt-pct Nickel Trace 1973

Comments on the reserve resource information

  • 10,300,000 TONS OF ABOVE SUBMARGINAL RESOURCES ALSO AVERAGE 0.2% CU.

Reference information

Bibliographic references

  • Deposit

    REED, J. C., AND DORR, J. V. N., 2D, 1942, USGS BULL. 931-F, P. 20-23

  • Deposit

    KENNEDY, G. C., AND WALTON, M. S., JR., 1946, USGS BULL. 947-C, P. 39-64

  • Deposit

    CORNWALL, H. R., 1966, USGS BULL. 1223, P. 36

  • Deposit

    CORNWALL, H.R., 1973, NICKEL (CHAPTER IN): U.S.GEOLOGICAL SURVEY PRO. PAPER 820, P.440

  • Reserve-Resource

    KENNEDY AND WALTON, 1946, USGS BULL. 947-C, P. 50-56

General comments

Subject category Comment text
Deposit DEPOSITS STUDIED AND MAPPED BY REED AND DORR(1942) THERE ARE AT LEAST SIX KNOWN NICKEL-COPPER SULFIDE DEPOSITS IN SOUTHEASTERN ALASKA, THE LARGEST IS IN THE BOHEMIAE G2 : UPDATE BY GLENN L. SHAFFER-1/75.: UPDATE BY GLENN L. SHAFFER-1/75, RESERVES AND POTENTIAL RESOURCES. BASIN ON YAKOBI ISLAND, ABOUT 80 MILES WEST OF JUNEAU. UPDATE BY GLENN L. SHAFFER-1/75, RESERVES AND POTENTIAL RESOURCES DATA ADDED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Coury, Anny B. U.S. Geological Survey
Updater 01-JAN-1975 Shaffer, Glenn L. 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.