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

Dunn Mine

Past Producer in Iron county in Michigan, United States with commodity Iron
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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Production statistics
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10079382
MRDS ID W028642
Record type Site
Current site name Dunn Mine
Alternate or previous names Dunn-Richards Mine;

Comments on the site names

  • DUNN AND RICHARDS MINE (W028626) WERE COMBINED. MINED ALONG SAME ORE DEPOSIT - DUNN MINE WAS SHALLOWER PART. PREVIOUSLY KNOWN AS YORK MINE

Geographic coordinates

Geographic coordinates: -88.37448, 46.07139 (WGS84)

Site location context

Political divisions (FIPS codes)

Iron(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Crystal Falls(quadrangle 1:24,000 scale)

Iron River(quadrangle 1:100,000 scale)

Iron River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Brule(hydrologic unit)

Northwestern Lake Michigan(hydrologic accounting unit)

Northwestern Lake Michigan(hydrologic subregion)

Great Lakes(hydrologic region)

Geographic areas

Country State County
United States Michigan Iron

Public Land Survey System information

Meridian Township Range Section Fraction State
Michigan 042N 033W 1 NW OF NE Michigan
SW OF NE Michigan

Comments on the location information

  • LOCATION OF MINE SHAFT, W 1/2 OF NE 1/4 SECTION 1.

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Hematite Ore
Goethite Ore
Chert Gangue
Pyrite Gangue
Siderite Gangue
Stilpnomelane Gangue
Chlorite Gangue
Mica Gangue

Alteration

  • (Local) Chert and siderite to hematite and goethite in oxidation zones.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Iron Formation
    Stratigraphic age (youngest) Paleoproterozoic

Nearby scientific data

(1) -88.37448, 46.07139
ListMap

Economic information

Controls for ore emplacement

  • Structurally controlled on synclinal flank.

Comments on the geologic information

  • WELL-BEDDED, CHERT AND SIDERITE IRON FORMATION

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Year of first production 1887
Year of last production 1915

Mining district

District name Menominee Range

Land status

Ownership category Private

Production statistics

  • Year 1915
    Period 1887-1915
    Material ore Fe
    Ore mined 2243847mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Fe Iron Iron 52wt-pct

Comments on the production information

  • ORE IS SOFT, REDDISH BROWN, NON-BESSEMER HEMATITE. CRUSHED. GRADE REPORTED IS AVERAGE OF NATURAL ANALYSIS FOR YEARS 1910, 1914, 1916.

Comments on the reserve resource information

  • REMAINING IRON FORMATION IS NOT COMMERCIALLY VIABLE.

Comments on the workings information

  • OPEN PIT AND UNDERGROUND BACK STOPING METHOD WITH 4 PRODUCTION SHAFTS SERVING 11 LEVELS ON SITE & 1 EXPLORATION SHAFT

Comments on development

  • CORRIGAN MCKINNEY AND REPUBLIC STEEL CO. DUNN & RICHARDS MINE COMBINED: DUNN LEVELS 10 & 11 MEET RICHARDS LEVELS 1 & 2.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit OPENED 1887, SHIPPED EVERY YEAR THROUGH 1915, EXCEPT 1900, 1901, 1904. FORMERLY OPERATED BY CORRIGAN MCKINNEY AND CO., LATER HELD BY CORRIGAN, MCKINNEY STEEL CO. ACQUIRED BY REPUBLIC STEEL CORP., SEPT. 30, 1935. LEASE SURRENDERED FEBRUARY 29, 1936. WORKED BY STOPING METHOD. UNDERGROUND.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1980 Yeager, Keith (Cannon, W.) Michigan Geological Survey Division
Updater 01-MAR-1997 Sutphin, D.M. U.S. Geological Survey
Editor 01-MAY-1997 Mason Jr., G.T. U.S. Geological Survey
Updater 10-SEP-2001 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.

Maps centered on this site