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Tamarack Junior 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 10082878
MRDS ID W062243
Record type Site
Current site name Tamarack Junior Mine

Geographic coordinates

Geographic coordinates: -88.44894, 47.25944 (WGS84)

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. 1

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
    Rock unit name Portage Lake Volcanics
    Rock description Portage Lake Volcanics
    Stratigraphic age (youngest) Stenian
    Chronological age 1095

Nearby scientific data

(1) -88.44894, 47.25944
ListMap

Economic information

Ore body information

  • General form TABULAR

Controls for ore emplacement

  • Open space in conglomerate and sandstone

Comments on the geologic information

  • TAMARACK JR. MINE OPERATED ON THE CALUMET AND HECLA CONGLOMERATE CONGLOMERATE LODE WHICH 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
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1892
Year of last production 1896
Production years 1892-1896 AS TAMARACK JR. THEN BECAME PART OF OSCEOLA MINE.

Mining district

District name Keweenaw Copper

Production statistics

  • Year 1896
    Period 1892-1896
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major recovered Cu Copper Copper 4292mt
  • Year 1903
    Period 1897-1903
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major recovered Cu Copper Copper 5626mt

Comments on the production information

  • PRODUCTION FROM 1897 TO 1903 CONSIDERED PART OF OSCEOLA MINE PRODUCTION.

Comments on the workings information

  • SEQUENTIAL; OPEN STOPE (EARLY) SQUARE SETS (DEEPER LEVELS) HEAVY STULL TIMBER BATTERIES, SLICE STOPING (200 -300 X100'); FINAL: RETREAT STOPING & SHAFT PILLAR & ARCH ROBBING.

Comments on development

  • ECON.COM: TAMARACK JR. WAS ORGANIZED IN 1888. IT WAS ABSORBED BY OSCEOLA CONSOLIDATED MINING CO. IN 1897. -----SEE THE OSCEOLA MINE MRDS RECORD.

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

  • Production

    BUTLER, B.S., AND BURBANK, W.S., 1929, P.92, 97.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1996 Sutphin, D.M. (Cannon, W.F.) U.S. Geological Survey
Updater 01-MAR-1997 Sutphin, D.M. U.S. Geological Survey
Editor 01-MAY-1997 Mason Jr., G.T. U.S. Geological Survey

Beyond USGS

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

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