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  3. Mineral Resource Data System (MRDS)

Bertha Bay Copper Prospect

Occurrence in Alaska, United States with commodity 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. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10002337
MRDS ID A013251
Record type Site
Current site name Bertha Bay Copper Prospect
Related records 10112688

Geographic coordinates

Geographic coordinates: -136.35565, 57.80721 (WGS84)
Location accuracy 500(meters)
Relative position 0.5 MI W OF WHITE SULPHUR SPRINGS ON BERTHA BAY.

Site location context

Political divisions (FIPS codes)

Sitka(Borough)

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)

West Chichagof-Yakobi Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-467, LOC. 15. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrrhotite Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone

Nearby scientific data

(1) -136.35565, 57.80721
ListMap

Economic information

Comments on the geologic information

  • CONTACTS OF ROCK UNITS MAY BE FAULTS; QUARTZITIC ROCK PARALLEL IN FOLIATION TO SCHIST COUNTRY ROCK (MAPPED AS CRET GRAYWACKE UNIT ON USGS B 1058-E, PLATE 12).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1916

Mining district

District name Chichagof

Land status

Ownership category National Forest

Comments on the workings information

  • A FEW SHOT HOLES ARE ONLY KNOWN DEVELOPMENT.

Comments on development

  • CLAIM STAKED 1916. EXCEPT FOR A FEW SHOT HOLES, NO DEVELOPMENT WAS DONE.

Reference information

Bibliographic references

  • Deposit

    USGS MF-467, LOC. 15 (1972)

  • Deposit

    USGS B 692, P. 124 (1919)

  • Deposit

    USGS OF 78-450, P. 16 (1978)

  • Deposit

    USGS B 1058-E, PLATE 12 (FOR REGIONAL GEOLOGY) (1959)

  • Other Database

    BAG-MF-467-15

General comments

Subject category Comment text
Deposit STRINGERS OF CHALCOPYRITE AND PYRRHOTITE IN ALTERED BASIC INTRUSIVE (?) AT CONTACT WITH BAND OF QUARTZITIC ROCK IN SCHIST, ON SHORE OF BERTHA BAY.
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-87 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey
Editor 02-SEP-94 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.

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.