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Tamarack Mine

Past Producer in Houghton county in Michigan, 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. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Production statistics
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10082879
MRDS ID W062244
Record type Site
Current site name Tamarack Mine
Alternate or previous names Tamarack 3 and 4

Geographic coordinates

Geographic coordinates: -88.46033, 47.25944 (WGS84)
Location accuracy 100(meters)
Relative position ACC.

Site location context

Political divisions (FIPS codes)

Houghton(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ahmeek(quadrangle 1:24,000 scale)

Hancock(quadrangle 1:100,000 scale)

Hancock C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Keweenaw Peninsula(hydrologic unit)

Southcentral Lake Superior(hydrologic accounting unit)

Southern Lake Superior(hydrologic subregion)

Great Lakes(hydrologic region)

Geographic areas

Country State County
United States Michigan Houghton

Public Land Survey System information

Meridian Township Range Section Fraction State
56N 33W 11 Michigan

Comments on the location information

  • SHAFT NO. 3

Commodities

Commodity Importance
Copper Primary

Comments on the commodity information

  • COPPER ARSENIDE MINERALS OCCUR WITH NATIVE COPPER IN FISSURES THAT CROSS-CUT NATIVE COPPER DEPOSITS.

Materials information

Materials Type of material
Copper Ore
Feldspar Gangue
Epidote Gangue
Quartz Gangue
Calcite Gangue

Mineral occurrence model information

Model code 96
USGS model code Unassigned
Deposit model name Native Cu
Mark3 model number 99

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
    Rock unit name Calumet And Hecla Conglomerate
    Rock description Calumet And Hecla Conglomerate
    Stratigraphic age (youngest) Stenian
    Chronological age 1095
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Portage Lake Volcanics
    Rock description Portage Lake Volcanics
    Stratigraphic age (youngest) Stenian
    Chronological age 1095

Nearby scientific data

(1) -88.46033, 47.25944
ListMap

Economic information

Ore body information

  • General form TABULAR

Controls for ore emplacement

  • Open space in conglomerate and amygdaloidal basalt flows

Comments on the geologic information

  • TAMARACK MINE OPERATED ON THE CALUMET AND HECLA CONGLOMERATE LODE AND THE OSCEOLA AMYGDALOID LODE. CALUMET AND HECLA CONGLOMERATE CAN BE TRACED FOR A DISTANCE OF MORE THAN 40 MILES. FOR MOST OF ITS LENGTH IT IS VERY THIN (1' TO A FEW FEET). IN CALUMET AREA, IT AVERAGES MORE THAN 10 FEET THICK.

Economic information about the deposit and operations

Development status Past Producer
Deposit size Medium
Significant No
Year of first production 1882
Production years 1882-1917 AS AN INDEPENDANT MINE.

Mining district

District name Keweenaw Copper

Production statistics

  • Year 1917
    Period 1882-1917
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major recovered Cu Copper Copper 176541mt

Comments on the production information

  • AS HIGH AS 71.95 LBS CU/TON ROCK TREATED ANNUALLY.

Comments on the workings information

  • OPEN STOPE WITH TIMBER PILLARS, PRESSURE WAS VERY GREAT, OLD WORKINGS WERE ALLOWED TO CAVE & SUB-LEVELS WERE OPENED BY NEW DRIFTS; #3 SHAFT MET CONGLOMERATE LODE AT 2270', SLICED THROUGH THE OSCEOLA LODE AT 3270' BELOW COLLAR

Comments on development

  • ECON.COM: ORGANIZED IN 1882; DECLARED ITS FIRST DIVIDEND IN 1888. SOLD TO CALUMET AND HECLA IN 1 APR 1917, AND THE COMPANY WAS DISSOLVED.

Reference information

Bibliographic references

  • Deposit

    BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF PAPER NO. 144, 238 PP.

  • Deposit

    WHITE, W.S., CORNWALL, H.R., AND SWANSON, R.W., 1953, BEDROCK GEOLOGY OF THE AHMEEK QUADRANGLE; USGS MAP GQ-27, SCALE 1:24000

  • Deposit

    JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, HOUGHTON COUNTY, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.

  • Production

    BUTLER, B.S., AND BURBANK, W.S., 1929, P. 96-97.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-96 Sutphin, D.M. (Cannon, W.F.) U.S. Geological Survey
Updater 01-MAR-97 Sutphin, D.M. U.S. Geological Survey
Editor 01-MAY-97 Mason Jr., G.T. U.S. Geological Survey
Updater 23-JUL-02 Anderson, Arlene (M. Gere) Michigan Department of Natural Resources

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site