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Stampede Mine

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

Identification information

Deposit ID 10000637
MRDS ID A011252
Record type Site
Current site name Stampede Mine
Related records 10209985

Geographic coordinates

Geographic coordinates: -150.37818, 63.73902 (WGS84)
Relative position 120 MI SW OF FAIRBANKS, ALASKA
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Antimony Primary
Gold Secondary
Silver Secondary
Zinc Tertiary

Comments on the commodity information

  • AU APPARENTLY ASSOCIATED WITH QUARTZ; LOW AU CONTENT IN SB-POOR, PYRITE-RICH PARTS OF VEIN

Materials information

Materials Type of material
Gold Ore
Sphalerite Ore
Stibnite Ore
Cervantite Gangue
Chlorite Gangue
Kermesite Gangue
Muscovite Gangue
Pyrite Gangue
Quartz Gangue
Stibiconite Gangue

Alteration

  • (Local) Secondary Sb Minerals, Stibiconite And Cervantite Near Surface, Kermesite Underground

Analytical data

Result COMPOSITE SAMPLE OF CONCENTRATES: 59.8% SB, 0.62% AS, 0.03 OZ/TON AU, 0.41 OZ/TON AG, TRACES OF CU, PB, ZN
Result PYRITE-RICH TABLE CONCENTRATE ALSO REPORTED TO HAVE SHOWN 1.71 OZ/TON AU, USGS BULLETIN 936-N, P. 341-342

Host and associated rocks

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

Nearby scientific data

(1) -150.37818, 63.73902
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Geologic structures

Type Description Terms
Regional Stampede Anticline, Trend: N55e To S 85e, Plunge: Ne, Cut By Stampede Fault
Local Pronounced Change In Strike Of Stampede Fault, From N 50 E To N 80 E, Near The Mine

Ore body information

  • General form LENSES AND KIDNEYS
    Strike N 80 E TO DUE N
    Dip 30 E TO 80 E
    Thickness 7.92M
    Depth to bottom 106.68M

Controls for ore emplacement

  • Mineralization Localized Along Stampede Fault, Especially Where Veins Or Cross Faults Intersect

Comments on the geologic information

  • ORE BODIES COMPRISE A SERIES OF VEINS THAT FOLLOW A LOW ANGLE OFFSHOOT OF THE STAMPEDE FAULT AND ARE COMMONLY WIDER AND HIGHER IN GRADE NEAR CROSS FAULT INTERSECTIONS. QUARTZITIC SCHIST CUT BY SMALL ANDESITE AND BASALT DIKES.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Large
Significant No
Year of first production 1937
Year of last production 1970

Mining district

District name Kantishna/Stampede Creek

Land status

Ownership category National Park

Ownership information

  • Type Owner-Operator
    Owner E. R. Pilgrim

Comments on the production information

  • DOES NOT INCLUDE 150 TONS OF HIGH GRADE ORE MINED BETWEEN 1916 AND 1937; ORE + CONCENTRATE RAN 50 TO 56% SB

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 6,500,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Antimony Sb 15 wt-pct Antimony Major 1983

Comments on the reserve resource information

  • BUNDTZEN, T.K, 1983, P.23
  • LINE 1: BUNDTZEN, 1983, P.23; LINE 2: MACKEVETT ET AL, 1978, P.35

Workings at the site

  • Type of workings Surface/Underground
    Length 1287.78M

Comments on the workings information

  • COMPLEX SERIES OF DRIFTS, CROSS CUTS, CONNECTING SHAFTS AND RAISES MOSTLY CAVED IN 1978; OPEN CUTS AND SURFACE TRENCHING EXTENSIVE; MILL ON SITE

Comments on development

  • USBM EXPLORATION WORK IN 1942-1943; DMEA CONTRACT WORK DONE IN 1953-1955 INCLUDED EXTENSIVE DRILLING AND TRENCHING; BUNDTZEN (1976) REPORTS DRILL CORE INTERSECTIONS WITH 2 UNDEVELOPED HIGH GRADE ORE SHOOTS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011252

Bibliographic references

  • Deposit

    USGS BULLETIN 936-N, P.331-348

  • Deposit

    USBM INFORMATION CIRCULAR 7379, P.67

  • Deposit

    USBM REPORT OF INVESTIGATIONS 4173, P.3-20

  • Deposit

    USGS BULLETIN 1108-A, P.A27-A29

  • Deposit

    USGS BULLETIN 1155, P. 10-17

  • Deposit

    USGS BULLETIN 1246, P.229-231

  • Deposit

    USGS PROFESSIONAL PAPER 820, P.48

  • Deposit

    ADGGS OPEN FILE 98, P. 8-10, 16-17, 27, 38-39

  • Deposit

    USBM OPEN FILE 24-78, P. 4-32, 4-36 TO 4-45

  • Deposit

    USGS OPEN FILE 78-1-E, P.35

  • Deposit

    11) ADGGS REPORT OF INVESTIGATION 83-12, P. 23

  • Production

    BUNDTZEN, 1976, P.27

General comments

Subject category Comment text
Deposit 1,500 FT OF KNOWN STRIKE LENGTH; ORE OCCURS IN HIGH GRADE (GREATER THAN 50% SB) VEINS AND LENSES, IN STRINGERS AND VEINLETS OF ALMOST PURE STIBNITE IN SHEAR ZONES AND DISSEMINATED IN QUARTZ VEINS (10-20% SB)
Deposit ORE ALSO DISCOVERED ON NORTH SIDE OF STAMPEDE CREEK; ALASKA'S LARGEST ANTIMONY PRODUCER, SECOND LARGEST AMERICAN ANTIMONY MINE; SEE ALSO: LAST CHANCE, SLATE CREEK ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1984 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 13-APR-1994 Mosier, Dan U.S. Geological Survey