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Poplar Lake Deposit

Unknown in Cook county in Minnesota, United States with commodities Iron, Titanium, Metal
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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. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10082793
MRDS ID W062143
Record type Site
Current site name Poplar Lake Deposit

Geographic coordinates

Geographic coordinates: -90.5118, 48.03361 (WGS84)
Location accuracy 100(meters)
Relative position Acc This Lat/Lon Will Hit Within The Deposit.

Site location context

Political divisions (FIPS codes)

Cook(county)

Minnesota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

South Lake(quadrangle 1:24,000 scale)

Saganaga Lake(quadrangle 1:100,000 scale)

Quetico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Baptism-Brule(hydrologic unit)

Northwestern Lake Superior(hydrologic accounting unit)

Western Lake Superior(hydrologic subregion)

Great Lakes(hydrologic region)

Federal lands

Superior National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Minnesota Cook

Public Land Survey System information

Meridian Township Range Section Fraction State
64N 1W; 2W Minnesota

Comments on the location information

  • ON THE SHORE OF POPLAR LAKE AND ON AN ISLAND IN THE LAKE.

Commodities

Commodity Importance
Iron Primary
Titanium, Metal Critical Primary

Materials information

Materials Type of material
Ilmenite Ore
Magnetite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Rock unit name Poplar Lake Intrusion
    Stratigraphic age (youngest) Mesoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Anorthosite
    Rock unit name Poplar Lake Intrusion
    Stratigraphic age (youngest) Mesoproterozoic

Nearby scientific data

(1) -90.5118, 48.03361
ListMap

Economic information

Geologic structures

Type of structure Local
Structure name Near contact of Duluth Complex with country rock .
Type of structure Regional
Structure name On The Northern Margin Of The Duluth Complex.

Ore body information

  • General form STRATIFORM

Comments on the geologic information

  • GROUT (1950) CONSIDERED THE POPLAR LAKE DEPOSITS TO BE TYPE 2 AND TYPE 3 DEPOSITS--BANDED SEGREGATIONS OF GABBRO AND IRREGULAR BODIES. HAUCK AND OTHERS (IN PRESS) WOULD CONSIDER THE IRREGULAR BODIES AS DISCORDANT OXIDE ULTRAMAFIC INTRUSION BODIES.

Economic information about the deposit and operations

Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Northern Range

Comments on the reserve resource information

  • POPLAR LAKE CONTAINS 3 OF 14 DEPOSITS LISTED BY GROUT(1950), P. 86) AS CONTAINING GREATER THAN 1 MILLION TONS OF ORE. BEYOND THE 14 DEPOSITS HE NOTED CONTAINING 81.6 MILLION TONS OF RESOURCES, GROUT (1950) ESTIMATED THAT ABOUT 50 ADDITIONAL SMALL DEPOSITS WERE LOCATED IN COOK COUNTY WITH AN INFERRED TONNAGE OF 552,000 TONS OF TITANIFEROUS MAGNETITE. THESE DEPOSITS ARE TOO SMALL AND TOO LEAN TO BE OF COMMERCIAL INTEREST.

Comments on development

  • WINCHELL (1897) REPORTED THAT THE TITANIFEROUS IRON ORES OF THE DULUTH COMPLEX WERE DISCOVERED ABOUT 1867, ABOUT THE SAME TIME AS THE MESABI RANGE IRON ORES.

Reference information

Bibliographic references

  • Deposit

    GROUT, F.F., 1950, THE TITANIFEROUS MAGNETITES OF MINNESOTA: ST. PAUL, MINN., COMMISSIONER OF THE IRON RANGE RESOURCES AND REHABILATION, 117 P.

  • Deposit

    HAUCK AND OTHERS, IN PRESS, AN OVERVIEW OF THE GEOLOGY AND OXIDE, SULFIDE, AND PLATINUM-GROUP ELEMENT MINERALIZATION ALONG THE WESTERN AND NORTHERN CONTACTS OF THE DULUTH COMPLEX, IN OJAKANGAS, R.W., DICKAS, A.B., AND GREEN, J.C.,EDS., [SPECIAL PAPRE IN THE MIDCONTINENT RIFT SYSTEM]: GEOLOGICAL SOCIETY OF AMERICA SPECIAL PAPER, IN PRESS.

  • Deposit

    CANNON, W.F., AND MCGERVEY, T.A., 1991, MAP SHOWING MINERAL DEPOSITS OF THE MIDCONTINENT RIFT, LAKE SUPERIOR REGION, UNITED STATES AND CANADA; U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP, MF-2153, SCALE 1;500,000, 1 SHEET.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-95 Sutphin, David M. (Cannon, W. F.) U.S. Geological Survey
Updater 01-MAR-97 Sutphin, David 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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