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813 - Mt. Bohemia West

Prospect 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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Reserves and resources
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10082613
MRDS ID W060048
Record type Site
Current site name 813 - Mt. Bohemia West

Geographic coordinates

Geographic coordinates: -88.0292, 47.39722 (WGS84)

Site location context

Political divisions (FIPS codes)

Keweenaw(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Delaware(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 029W 29, 30 Michigan

Comments on the location information

  • ABOUT A MILE WEST OF THE MT. BOHEMIA DEPOSIT (INEXACT LOCATION SO ASSUMED LOCATION ON BOHEMIA CONGLOMERATE JUST INSIDE SECT. 30 FOR LAT/LONG POSITION)

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcocite Ore

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) -88.0292, 47.39722
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Two flow tops 175 feet apart stratigraphically are mineralized and cross cu

Comments on the geologic information

  • SEVERAL CROSSCUTTING FAULTS WITH DISPLACEMENTS UP TO 50 FEET ARE PRESENT IN THE WESTERN PART OF THE DEPOSIT.

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No
Discoverer Homestake Keweenaw venture

Mining district

District name Keweenaw Copper

Ownership information

  • Type Owner
    Owner Michigan Copper Company Ltd

Reserves and resources

  • Type In-situ
    Estimate year 1995
    Reserves 9
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2.2 wt-pct Copper Major 1995

Comments on the reserve resource information

  • Reported ore grade 2.2% Cu.

Reference information

Bibliographic references

  • Deposit

    MICHIGAN COPPER COMPANY LTD, 19----, MICHIGAN COPPER SULFIDE PROJECT: KEWEENAW PENINSULA: COMPANY REPORT, 21 PP.

  • Reserve-Resource

    MICHIGAN COPPER COMPANY LTD REPORT

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.

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