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Ransom Mine

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. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10082646
MRDS ID W060084
Record type Site
Current site name Ransom Mine

Geographic coordinates

Geographic coordinates: -88.58338, 48.09167 (WGS84)

Site location context

Political divisions (FIPS codes)

Keweenaw(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mott Island(quadrangle 1:24,000 scale)

Todd Harbor(quadrangle 1:100,000 scale)

Thunder Bay(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Southern Lake Superior(hydrologic subregion)

Great Lakes(hydrologic region)

Federal lands

Isle Royale National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State County
United States Michigan Keweenaw

Public Land Survey System information

Meridian Township Range Section Fraction State
Michigan 066N 034W 22 Michigan

Comments on the location information

  • ON ISLE ROYALE ISLAND NATIONAL PARK IN LAKE SUPERIOR.

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) -88.58338, 48.09167
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fissure in amygdaloidal basalt

Ore body information

  • General form FISSURE

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years PRIOR TO 1850

Mining district

District name Keweenaw Copper

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-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