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Lake Superior Group

Past Producer in Marquette county in Michigan, United States with commodity Iron
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Economic information about the deposit and operations
  15. Mining district
  16. Production statistics
  17. Workings at the site
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10082749
MRDS ID W062099
Record type Site
Current site name Lake Superior Group
Alternate or previous names Hard Ore, Hematite, Holmes, Section 16, Section 21, Section 10 Exploration, Holmes-Section 16

Geographic coordinates

Geographic coordinates: -87.67585, 46.4825 (WGS84)

Site location context

Political divisions (FIPS codes)

Marquette(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ishpeming(quadrangle 1:24,000 scale)

Gwinn(quadrangle 1:100,000 scale)

Marquette(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Escanaba(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 Marquette

Public Land Survey System information

Meridian Township Range Section Fraction State
T47N R27W 10 SW 1/4,NW 1/ Michigan

Comments on the location information

  • LAT/LON IS FOR THE ORE BODY

Commodities

Commodity Importance
Iron Primary

Comments on the commodity information

  • HARD, SILICEOUS, BESSEMER AND SOFT, NON-BESSEMER ORES WERE PRODUCED.

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Goethite Ore
Quartz Gangue

Alteration

  • (Local) Some magnetite formed by replacement of ferrous iron minerals during diagenesis and most iron silicate probably formed by metamorphism of an early silicate mineral.

Mineral occurrence model information

Model code 241
USGS model code 34a
Deposit model name Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Iron Formation
    Rock unit name Negaunee Iron-Formation
    Rock description Negaunee Iron-Formation
    Stratigraphic age (youngest) Paleoproterozoic

Nearby scientific data

(1) -87.67585, 46.4825
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Westward plunging synclinorium open at western end; regional trends are eas

Ore body information

  • General form STRATABOUND

Comments on the geologic information

  • IRON DEPOSITS OCCUR IN THE NEGAUNEE IRON-FORMATION OF THE MENOMINEE GROUP, PART OF THE MARQUETTE SUPERGROUP. THE IRON-FORMATION IS UNDERLAIN BY THE SIAMO SLATE, IRON DEPOSITS OCCUR IN THE NEGAUNEE IRON-FORMATION OF THE MENOMINEE GROUP, PART OF THE MARQUETTE SUPERGROUP. THE IRON-FORMATION IS UNDERLAIN BY THE SIAMO SLATE, A SERIES OF SLATE, SERICITE, CHLORITIC, AND FELDSPATHIC QUARTZITES, ARKOSE, AND GRAYWACKE WHICH RANGES FROM 3,000 FT THICK TO 1,000 FT IN THE SYNCLINORIUM AND DISAPPEARS IN THE SOUTHERN PART OF PALMER QUADRANGLE. NEGAUNEE IRON-FORMATION IS METASEDIMENTARY ROCK WHICH CONTAINS (1) SIDERITE, MAGNETITE, IRON SILICATES, AND CHERT OR (2) MIXTURES OF HEMATITE, MAGNETITE, AND CHERT. THE IRON-FORMATION IS BELIEVED TO HAVE FORMED BY CHEMICAL PRECIPITATION OF THE PRINCIPAL IRON MINERALS AND SILICA GEL. IT IS THE SOURCE OF IRON ORE MINED IN THE MARQUETTE RANGE AND IS OVERLAIN BY GOODRICH QUARTZITE. MAJOR W- TO NW-PLUNGING FOLDS OCCUR WITHIN THE MARQUETTE SYNCLINORIUM, AND MAJOR FAULTS ARE ASSOCIATED WITH THE FOLDING.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1844
Year of first production 1858
Year of last production 1945
Production years SHIPMENTS WERE MADE FOR SOME MINES IN THE GROUP EVERY YEAR FROM 1858 TO 1945 EXCEPT FOR 1932, 1938, AND 1944.

Mining district

District name Marquette Iron District

Production statistics

  • Year 1945
    Period 1858-1945
    Material ore Fe
    Ore mined 25504840mt
    Accuracy Accurate

Comments on the production information

  • TOTAL FOR THE MINES IN THE GROUP

Workings at the site

  • Type of workings Underground
    Overall depth 441.96M

Comments on the workings information

  • ORE WAS MINED BY TOP SLICING.

Reference information

Bibliographic references

  • Deposit

    LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES, 2D ED.: CLEVELAND, OHIO, LAKE SUPERIOR IRON ORE ASSOCIATION, 334 P.

  • Deposit

    MOST ALL OF THIS DISTRICT HAS BEEN MAPPED AT 7 1/2 MINUTE QUADRANGLE SIZE. TOO MANY GEOLOGISTS HAVE BEEN INVOLVED TO MENTION INDIVIDUALLY. GAIR, J.E., 1975, BEDROCK GEOLOGY AND ORE DEPOSITS OF THE PALMER QUADRANGLE, MARQUETTE COUNTY, MICHIGAN: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 769, 159 P.

  • Production

    LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES: CLEVELAND, OHIO, 2D ED., 75-92 P.

General comments

Subject category Comment text
Deposit LOWER PRECAMBRIAN 'W' (OR ARCHEAN) ROCKS OVERLAIN BY MIDDLE PRECAMBRIAN 'X' (OR MARQUETTE RANGE SUPERGROUP) ROCKS. LOWER PRECAMBRIAN W CRYSTALLINE ROCKS BLOCK FAULTED AND DIFFERENTIALLY RAISED AND LOWERED; FORMING TROUGHS. MIDDLE PRECAMBRIAN 'X' (OR MARQUETTE RANGE SUPERGROUP) ROCKS AS SEMI-CONSOLIDATED SEDIMENTS SLUMPED INTO THE TROUGHS. AT ABOUT THE SAME TIME ENTIRE AREA WAS REGIONALLY THERMALLY METAMORPHOSED, CREATING METAMORPHIC FACIES OR NODES. THE MARQUETTE DISTRICT AFFECTED BY THE REPUBLIC NODE, WHICH GRADES FROM CHLORITE TO SILLIMANITE ZONES, EXCLUSIVE OF KYANITE ONLY. SILLIMANITE ZONE IS IN VICINITY OF AND INCLUDES REPUBLIC TOWN AND REPUBLIC OPEN PIT. REST OF ZONED AREAS ARE REGULAR SHAPED, FAIRLY ROUND WITH SLIGHT FLATTENING TO THE NORTHEAST. (JAMES, H. L., 1955, P. 1455-1488)
Deposit DESCRIPTIVE (CANNON, 1986) AND GRADE AND TONNAGE (MOSIER AND SINGER, 1986) DEPOSIT MODELS OF SUPERIOR FE ARE IN COX AND SINGER, 1986, MINERAL DEPOSIT MODELS: U.S. GEOLOGICAL SURVEY BULLETIN, 1693, P. 228-230. LARUE (1981) FOUND THAT CHEMICAL IRON SEDIMENTATION APPARENTLY TOOK PLACE WITH LITTLE REGARD TO BASINAL OR PLATFORM ENVIRONMENTS. BOTH ENVIRONMENTS SHOW PERIODS OF CHEMICAL-IRON SEDIMENTATION. HOWEVER, IN BOTH ENVIRONMENTS, DEPOSITION OF IRON WAS RESTRICTED TO PERIODS OF DETRITAL-SEDIMENT STARVATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1995 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.

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