1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Bohemian Range Exploration

Prospect in Keweenaw county in Michigan, United States with commodity Copper
Map
XML
JSON
KML
B
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. Workings at the site
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10082842
MRDS ID W062200
Record type Site
Current site name Bohemian Range Exploration

Geographic coordinates

Geographic coordinates: -88.2356, 47.34028 (WGS84)
Elevation 338

Site location context

Political divisions (FIPS codes)

Keweenaw(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bruneau Creek(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 057N 032W 15 NW OF SW Michigan

Comments on the location information

  • LAT/LON IS FOR A SHAFT

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Copper Ore
Calcite Gangue
Quartz Gangue
Epidote Gangue
Chlorite 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 Portage Lake Volcanics
    Rock description Portage Lake Volcanics
    Stratigraphic age (youngest) Stenian
    Chronological age 1095

Nearby scientific data

(1) -88.2356, 47.34028
ListMap

Economic information

Ore body information

  • General form FISSURE

Controls for ore emplacement

  • Fissure

Comments on the geologic information

  • THE AMYGDALOID STRIKES ABOUT N 60 E AND DIPS 70 NW.

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Production years NONE

Mining district

District name Keweenaw Copper

Workings at the site

  • Type of workings Underground
    Overall depth 25.3M

Comments on the workings information

  • A SHAFT DIPPING 80 DEGREES NW WAS SUNK 83 FT TO EXPLORE THE AMYGDALOIDAL TOP OF A MELAPHYRE. CROSSCUTS EXTENDING ABOUT 50 FT SOUTH AND ALMOST 100 FT NORTH FROM THE BOTTOM OF THE SHAFT, CUT AT LEAST ONE ADDITIONAL FLOW TOP. SEVERAL SHORT DRIFTS WERE OPENED, BUT NO STOPING WAS DONE.

Comments on development

  • EXPLORATION WAS CARRIED OUT IN 1904-05. ; ECON.COM: AS OF 1954, NO NATIVE COPPER DEPOSITS OF COMMERCIAL INTEREST HAD BEEN FOUND IN THE BRUNEAU QUADRANGLE.

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

    WRIGHT, J.C., AND CORNWALL, H.R., 1954, BEDROCK GEOLOGY OF THE BRUNEAU CREEK QUADRANGLE, MICHIGAN: U.S. GEOLOGICAL SURVEY, GEOLOGIC QUADRANGLE MAPS OF THE UNITED STATES, GQ 35, 1:24,000.

  • Deposit

    DAILY MINING GAZETTE, 30 JAN 1906.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-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