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  3. Mineral Resource Data System (MRDS)

Knowlton Mine

Past Producer in Ontonagon 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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Production statistics
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10310147
MRDS ID LW00147
Record type Site
Current site name Knowlton Mine

Geographic coordinates

Geographic coordinates: -89.11535, 46.75417 (WGS84)
Relative position ROCKLAND TOWNSHIP;

Site location context

Political divisions (FIPS codes)

Ontonagon(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Greenland(quadrangle 1:24,000 scale)

Ontonagon(quadrangle 1:100,000 scale)

Iron River(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 Ontonagon

Public Land Survey System information

Meridian Township Range Section Fraction State
Michigan 50N 39W 1 SE OF SE Michigan

Commodities

Commodity Importance
Copper Primary

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) -89.11535, 46.75417
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Syncline

Ore body information

  • Name KNOWLTON LODE AMYGDALOID
    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
Commodity type Metallic
Significant No
Year of first production 1896
Year of last production 1906

Mining district

District name Keweenaw Copper District

Production statistics

  • Year 1906
    Period 1896-1906
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major recovered Cu Copper Copper 450.31mt

Comments on the workings information

  • 3 SHAFTS NEAR TOP OF BLUFF & 1 ADIT INTO SIDE OF BLUFF

Comments on development

  • KNOWLTON MINING CO (1853, REORGANIZED 1860), TRIBUTORS 1869-1891; ADVENTURE CONSOLIDATED COPPER CO. (1893)

Reference information

Bibliographic references

  • Deposit

    JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, ONTONAGON COUNTY, P. 100-102, SITE ID # 660044, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.

  • Production

    UNDERGROUND MINE INVENTORY

General comments

Subject category Comment text
Deposit THERE WAS A COMPANY, LODE AND MINE ALL NAME KNOWLTON

Reporter information

Type Date Name Affiliation Comment
Reporter 06-AUG-2002 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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