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Upper Peninsula Graphite Deposit

Prospect in Baraga county in Michigan, United States with commodity Graphite
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Reserves and resources
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10310204
MRDS ID W062140
Record type Region
Current site name Upper Peninsula Graphite Deposit

Geographic coordinates

Geographic coordinates: -88.12504, 46.5 (WGS84)
Location accuracy 1000(meters)
Relative position EST LOCATION NEAR BARAGA/MARQUETTE CO

Site location context

Political divisions (FIPS codes)

Baraga(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nelson Lake(quadrangle 1:24,000 scale)

Iron River(quadrangle 1:100,000 scale)

Iron River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Michigamme(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 Baraga
United States Michigan Marquette

Comments on the location information

  • UPPER PENINSULA, MICHIGAN, IN BARAGA AND MARQUETTE COUNTIES.

Commodities

Commodity Importance
Graphite Critical Primary

Materials information

Materials Type of material
Graphite Ore

Mineral occurrence model information

Model code 69
USGS model code 18k
Deposit model name Amorphous graphite

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Rock unit name Michigamme Formation
    Rock description Michigamme Formation
    Stratigraphic age (youngest) Paleoproterozoic

Nearby scientific data

(1) -88.12504, 46.5
ListMap

Economic information

Ore body information

  • Length 30M

Comments on the geologic information

  • GRAPHITE-RICH ROCK OCCURS IN A 30-MILE LONG BELT NEAR U.S. 41 IN BARAGA AND MARQUETTE COUNTIES IN THE LOWER SLATE OF THE PRECAMBRIAN MICHIGAMME FORMATION.

Economic information about the deposit and operations

Development status Prospect
Deposit size Large
Significant No
Discovery year 1987
Discoverer Dr. Allan Johnson led a group of researchers at Michigan Tech. Deposits were first explored during World War Ii.

Reserves and resources

  • Type In-situ
    Estimate year 1988
    Reserves 3000000
    Commodity Subtype Grade units Group Importance Year
    Graphite carbon 23 wt-pct Graphite Major 1988

Comments on the reserve resource information

  • THREE FIELD SAMPLES, BELIEVED TO BE REPRESENTATIVE, GAVE CARBON CONTENTS RANGING FROM 17 TO 30 PERCENT.

Comments on the workings information

  • DIAMOND DRILLING HAS BEEN DONE DOWN TO 170 FT AND GEOPHYSICAL TESTING HAS BEEN DONE.

Comments on development

  • $56,000 FOR PRELIMINARY INVESTIGATION WAS PROVIDED BY THE MICHIGAN GEOLOGICAL SURVEY. ; ECON.COM: THIS IS A LOW GRADE AMORPHOUS GRAPHITE DEPOSIT, BUT ITS LOCATION IN THE TACONITE-PRODUCING AREA MAY MAKE IT OF ECONOMIC IMPORTANCE. IN 1988, INTEREST IN THE GRAPHITE WAS HIGH, BECAUSE OF ITS POTENTIAL USE AS A REDUCTANT IN SELF-REDUCING, SELF-FLUXING IRON-ORE PELLETS. THE PELLETS WERE TESTED AT EAGLE MILLS PILOT TEST FACILITY NEAR NEGAUNEE, MI.

Reference information

Bibliographic references

  • Deposit

    MICHIGAN GEO-PULSE, 1987, GRAPHITE EVALUATION AND UTILIZATION RESEARCH: MICHIGAN GEO-PULSE, V. II, NO. 3, P. 4.

  • Deposit

    SKILLINGS' MINING REVIEW, LARGE GRAPHITE DEPOSIT ON UPPER PENINSULA UNDER RESEARCH BY MICH TECH/GEOLOGICAL SURVEY: SKILLINSKILLINGS' MINING REVIEW, LARGE GRAPHITE DEPOSIT ON UPPER PENINSULA UNDER RESEARCH BY MICH TECH/GEOLOGICAL SURVEY: SKILLINGS' MINING REVIEW, V. 77, NO. 42, P. 8.

  • Deposit

    TAYLOR, H.A., JR., 1988, GRAPHITE, IN U.S. BUREAU OF MINES MINERALS YEARBOOK 1986, V. I, METALS AND MINERALS: WASHINGTON, D.C., U.S. GOVERNMENT PRINTING OFFICE, P. 459-469.

  • Reserve-Resource

    SKILLINGS, 1988, V. 77, NO. 42, P. 8.

General comments

Subject category Comment text
Deposit OF THREE SAMPLES TAKEN, THE SAMPLE WITH THE HIGHEST FLOTATION RECOVERY YIELDED A 47.5 PERCENT CARBON CONCENTRATE WITH A 55 PERCENT RECOVERY. THE SAMPLE WITH THE POOREST RECOVERY (6 PERCENT RECOVERY) WAS THE MOST SILICIFIED. LIBERATION SIZE OF THE GRAPHITE PARTICLES WAS VERY SMALL, PROBABLY UNDER 10 MICROMETERS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-97 Sutphin, D.M. (Cannon, W.F.) U.S. Geological Survey
Updater 01-MAR-97 Sutphin, D.M. U.S. Geological Survey
Editor 01-MAY-97 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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