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Copper Falls

Past Producer in Keweenaw 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. Geologic structures
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10082632
MRDS ID W060070
Record type Site
Current site name Copper Falls

Geographic coordinates

Geographic coordinates: -88.19976, 47.42861 (WGS84)

Site location context

Political divisions (FIPS codes)

Keweenaw(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Eagle Harbor(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 Keweenaw

Public Land Survey System information

Meridian Township Range Section Fraction State
Michigan 058N 031W 14 SW OF NE Michigan

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Copper Ore

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

Nearby scientific data

(1) -88.19976, 47.42861
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Ashbed amygdaloid and several fissures

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1862
Year of last production 1877

Mining district

District name Keweenaw Copper

Ownership information

  • Type Owner
    Owner Copper Falls Mining Co

Production statistics

  • Year 1877
    Period 1862-1877
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major recovered Cu Copper Copper 331.6mt

Comments on the production information

  • THIS IS THE ESTIMATED PRODUCTION FROM THE COPPER FALLS FISSURE (NOT JUST THE COPPER FALLS MINE THAT WORKED THE ASHBED AMYGDALOID ITSELF AND NOT JUST THE FISSURE)

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., 1954, BEDROCK GEOLOGY OF THE EAGLE HARBOR QUADRANGLE, MICHIGAN: USGS MAP GQ-36, SCALE 1:24000

  • Production

    BUTLER AND BURBANK, 1929; CORNWALL AND WRIGHT, 1954

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1995 Nicholson, Suzanne 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.

External references

Maps centered on this site