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Alpha Mine

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

Identification information

Deposit ID 10000595
MRDS ID A011201
Record type Site
Current site name Alpha Mine

Geographic coordinates

Geographic coordinates: -151.01956, 63.52456 (WGS84)
Location accuracy 1000(meters)
Relative position NEAR THE TOP OF THE HILL N OF ELDORADO CREEK AND ABOUT ONE MILE W OF MOOSE CREEK, Within A Half Mile Radius
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Secondary
Zinc Tertiary
Antimony Tertiary
Copper Tertiary

Comments on the commodity information

  • RELATIONSHIP OF COMMODITIES TO ORE MINERALS UNCERTAIN; CHALCOPYRITE IS DISSEMINATED IN SCHIST

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Stibnite Ore
Tetrahedrite Ore
Boulangerite Gangue
Jamesonite Gangue
Pyrite Gangue
Quartz Gangue
Siderite Gangue

Analytical data

Result ASSAY (IN PPM) OF TWO GRAB SAMPLES AND ONE CHIP SAMPLE: CU: 2350, 800, 5000
Result PB: 65000, 11500, 185000
Result ZN: 18500, 7500, 46500
Result AG: 440, 320, 800
Result AU: .20, 0.0, .22
Result SB: 8600, 2950, 27800
Result ONE SAMPLE ASSAYED APPROXIMATELY 23 OZ/TON AG AND 18.5% PB

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Birch Creek Schist
    Rock description Birch Creek Schist
    Stratigraphic age (youngest) Early Cambrian
    Stratigraphic age (youngest) Early Cambrian

Nearby scientific data

(1) -151.01956, 63.52456
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Geologic structures

Type Description Terms
Regional Open, Nearly Symmetrical Kantishna Antiform Trending Ne
Local Nw Trending Fault System

Ore body information

  • General form VEIN
    Thickness 3.05M
    Length 91.44M

Controls for ore emplacement

  • Vein Probably Terminates On A Fault To The Ne

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1921
Year of last production 1921

Mining district

District name Kantishna District; Kantishna Mining Area

Land status

Ownership category National Park

Ownership information

  • Type Owner
    Owner Jim Fuksa Et Al.
    First year 1978

Comments on the production information

  • PRODUCED 10 TONS OF ORE CONTAINING 2,000 OZ AG AND 25 OZ AU IN 1921; THIS IS THE ONLY KNOWN PRODUCTION.

Comments on the reserve resource information

  • ADGGS RI 83-12, P. 17

Comments on the workings information

  • ALL WORKINGS CAVED IN 1931; TUNNEL HAD BEEN 120 FT WITH 100 FT TIMBERED; 20 FT SHAFT SITUATED 60 FT S 25 W OF THE END OF THE TIMBERING

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011201

Bibliographic references

  • Deposit

    USGS BULLETIN 849-F, P. 354, 358, 375-376

  • Deposit

    ADGGS OPEN FILE 98, P. 9, 25, 29

  • Deposit

    USGS OPEN FILE 77-169A, P. 44 LOC. 3

  • Deposit

    USBM OPEN FILE 24-78, P. 4-10A, 4-21 TO 4-23

  • Deposit

    ADGGS RI 83-12, P. 17

General comments

Subject category Comment text
Deposit VEIN IS EXPOSED FOR 300 FT ALONG STRIKE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-84 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-95 Waller, Nichelle (Mosier, Dan) U.S. Geological Survey PUT DIMENSION DATA INTO THE ORE BODY FIELDS FROM THE DEPOSIT COMMENTS FIELD.