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  3. Mineral Resource Data System (MRDS)

La Salle Mine

Past Producer in Houghton county in Michigan, United States with commodities Copper, Silver
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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 10082870
MRDS ID W062233
Record type Site
Current site name La Salle Mine
Alternate or previous names Caldwell, Tecumseh

Comments on the site names

  • INCLUDES CALDWELL AND OTHER LANDS.

Geographic coordinates

Geographic coordinates: -88.46866, 47.21306 (WGS84)

Site location context

Political divisions (FIPS codes)

Houghton(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Laurium(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 34 Michigan

Comments on the location information

  • SHAFT NO. 1

Commodities

Commodity Importance
Copper Primary
Silver Secondary

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 Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Kearsarge Amygdaloid
    Rock description Kearsarge Amygdaloid
    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) -88.46866, 47.21306
ListMap

Economic information

Ore body information

  • General form TABULAR

Controls for ore emplacement

  • Ophitic flow having distinctive plagioclase phenocrysts.

Comments on the geologic information

  • COPPER WAS MINED FROM THE KEARSARGE AMYGDALOID AND A CROSSCUT WAS DRIVEN FROM OSCEOLA AMYGDALOID TO ALLOUEZ CONGLOMERATE. ALL PRODUCTION IS FROM THE KEARSARGE AMYGDALOID.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1910
Year of last production 1920
Production years 1910-1920

Mining district

District name Keweenaw Copper

Production statistics

  • Year 1920
    Period 1910-1920
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major recovered Cu Copper Copper 3545mt

Comments on the production information

  • ALL PRODUCTION IS FROM THE KEARSARGE AMYGDALOID.

Comments on the workings information

  • KEARSARGE WAS ONE OF THE RICHEST LODES - ESPECIALLY NEAR HANGING WALL. LODE AVERAGES 6-13 FEET THICK IN AREA OF MINING ACTIVITY.

Comments on development

  • ECON.COM: PURCHASED TECUMSEH IN MAY 1910. FROM 1921 TO 1925 THERE WAS NO PRODUCTION FROM THIS SITE.

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

    CORNWALL, H.R., AND WRIGHT, J.C., 1956, GEOLOGIC MAP OF THE LAURIUM QUADRANGLE, MICHIGAN: USGS MAP MF-47, SCALE 1:24000

  • Production

    BUTLER, B.S., AND BURBANK, W.S., 1929, P. 88.

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.

Maps centered on this site