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Eagle Harbor Mines

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. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10310099
MRDS ID LW00099
Record type Site
Current site name Eagle Harbor Mines

Comments on the site names

  • INCLUDES INFORMATION FROM : EAGLE HARBOR MINE, WATERBURY (ALIAS NORTHWESTERN, NEW YORK), MIDDLESEX, ESSEX, SUSSEX (1864)

Geographic coordinates

Geographic coordinates: -88.1531, 47.44083 (WGS84)
Location accuracy 100(meters)
Relative position EAGLE HARBOR TOWNSHIP, LAT/LONG IS BASED ON CENTER POINT OF SECTION FRACTION ON SECTION 17

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 58N 30W 7, 9,17,18 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) -88.1531, 47.44083
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Syncline

Ore body information

  • General form IRREGULAR

Comments on the geologic information

  • ALTERNATE BRECCIATED BASALT FLOWS, AMYGDALOIDAL BASALTS AND/OR INTERFLOW CONGLOMERATES - VARIES WITH LOCATION

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Significant No
Year of first production 1864
Year of last production 1866

Mining district

District name Keweenaw Copper District

Ownership information

  • Type Owner
    Owner Eagle Harbor Co.
  • Type Operator
    Owner Eagle Harbor Mining Co.

Comments on the workings information

  • UNDERGROUND USUALLY SHAFTS INTO COPPER FISSURE VEINS FORMIUNDERGROUND USUALLY SHAFTS INTO COPPER FISSURE VEINS FORMING SHALLOW 1 OR 1 LEVEL MINE, IN EARLY MINES MANY SHAFTS WERE SUNK OFTEN ONLY 100' APART.

Comments on development

  • EAGLE HARBOR MINING CO. - AN EARLY EXPLORATION OUTFIT THAT ATTEMPTED MINING ON LANDS & MINERAL RIGHTS THAT COVERED A VERY LARGE AREA, BUT HANDED DOWN LITTLE IF ANY RECORD OF COMMERCIAL PRODUCTION

Reference information

Bibliographic references

  • Deposit

    JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, P. 115-119, SITE ID # 420029, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.

General comments

Subject category Comment text
Deposit ESSEX - 2 SHAFTS & 1 ADIT, MADISON GAP- 1 ADIT & 1 SHAFT, EAGLE HARBOR FISSURE - 1 SHAFT, MIDDLESEX (WATERBURY) - 3 SHAFTS, SUSSEX MINE - 1 SHAFT, 5 VARIOUS SHAFTS LISTED IN SECTION 12, 3 VARIOUS SHAFTS LISTED IN SECTION 7, 1 SHAFT LISTED IN SECTION 9.
Deposit MAINLY FISSURE VEINS, BUT ALSO SOME MINING ON ASHBED & AMYGDALOID LODES

Reporter information

Type Date Name Affiliation Comment
Reporter 05-AUG-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.

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