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Big Harbor Mine

Past Producer in Alaska, United States with commodities Copper, Gold, Silver, Zinc
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Geologic information

Identification information

Deposit ID 10100928
MRDS ID A010014
Record type Site
Current site name Big Harbor Mine
Alternate or previous names Northland Development Co.
Related records 10185379

Geographic coordinates

Geographic coordinates: -132.97125, 55.37194 (WGS84)
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • LOCATION INDICATED IS OF MILL SITE. ACTUAL MINE IS 1/2 MILE FROM TIDEWATER 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
Gold Tertiary
Silver Tertiary
Zinc Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Sphalerite Ore

Analytical data

Result CHIP SAMPLE CONTAINED 1.9% CU

Host and associated rocks

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

Nearby scientific data

(1) -132.97125, 55.37194
ListMap

Ore body information

  • General form LENSES, PODS, STRINGERS
    Strike N60E
    Dip 60NW
    Thickness 18.9M

Controls for ore emplacement

  • Mineralized Zone Is At Gradational Contact Between Metamorphic Facies

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1907
Year of first production 1912
Year of last production 1916

Mining district

District name Ketchikan District

Land status

Ownership category National Forest

Production statistics

  • Year 1916
    Period 1912-1916
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^6%-7% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Copper Copper 7wt-pct

Workings at the site

  • Type of workings Surface/Underground
    Length 182.88M
    Overall depth 15.24M

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010014

Comments on the other database information

  • RECORD NUMBER W062012 IS A POTENTIAL DUPLICATE OF THIS RECORD; RECORD NUMBER W062119 IS A POTENTIAL DUPLICATE OF THIS RECORD

Bibliographic references

  • Deposit

    USGS BULL 592, P. 84-85.

  • Deposit

    USGS BULL 642, P. 91-93.

  • Deposit

    USGS BULL 714, P. 18.

  • Deposit

    USGS BULL 1246 P. 170.

  • Deposit

    USGS MF 433.

  • Deposit

    USGS OF 78-869 P. 19-20.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1983 Hirschmann, M. M. (Elliott, R. L.) U.S. Geological Survey
Editor 12-APR-1994 Mosier, Dan U.S. Geological Survey