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Cobar No. 1

Past Producer in Albany county in Wyoming, 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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10132330
MRDS ID W032476
MAS/MILS ID 0560010023
Record type Site
Current site name Cobar No. 1
Alternate or previous names Laramie Range, Cobar No. 1 Mine, Cobar #1-Plicoflex Inc, Magnetite Products Corp.

Comments on the site identification

  • Mine shown as Iron on Geological Survey of Wyoming's "Mineas and Minerals Map of Wyoming" in the equivalent of Sec. 2 appears to be an error based on the incorrect section in Bull. 50. ABW could find no indication of a mine in Sec. 2. The location given as sec. 21 in IC-8315 is assumed to be the correct location.

Geographic coordinates

Point of reference Trench
Geographic coordinates: -105.3506, 41.77969 (WGS84)
Elevation 1830
Location accuracy 1000(meters)
Relative position E2 of sec. 21. Titaniferous iron prospect shown, but not labeled, on MF-119, a few hundred feet NW of Iron Mtn Deposit #1 (also shown but not labeled)., 1000 Meters, 1000 Meters, 1000 Meters, 1000 Meters

Site location context

Political divisions (FIPS codes)

Albany(county)

Wyoming(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Poe Mountain(quadrangle 1:24,000 scale)

Rock River(quadrangle 1:100,000 scale)

Cheyenne(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Laramie(hydrologic unit)

North Platte(hydrologic accounting unit)

North Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management WY)

Bureau of Land Management WY BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Wyoming Albany

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 021 N 071 W 21 E2 Wyoming

Comments on the location information

  • E2 of sec. 21 (IC-8315, p. 15). Supposed location in Sec. 2 in Bull. 50, p. 108, appears to be a typo. There is a prospect on MF-119 in Sec. 21. There are no prospects in Sec. 2. Sec. 2 is mapped as hornblende syenite, not anorthosite, and therefore is unlikely to host this deposit, based on the two brief deposit descriptions not mentioning syenite. The mines and minerals map of Wyoming (1970) appears to propagate this error. Nor is there any indication of surface or road disturbances in Sec. 2.

Commodities

Commodity Importance
Iron Tertiary

Materials information

Materials Type of material
Ilmenite Unknown
Magnetite Unknown

Nearby scientific data

Trench (1) -105.3506, 41.77969
ListMap

Economic information

Ore body information

  • Thickness 11M
    Length 396M
    Width 15M
    Depth to top 0M
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 MASSIVE
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Strike And Dip N00S:
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 780213

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1850
Year of first production 1956

Mining district

District name None

Mineral rights holdings

Type of mineral rights Private Lease

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Plicoflex Inc.
    Home office Wyoming
    Year 1976

Comments on the reserve resource information

  • RESERVES CALCULATED FROM AVERAGE DIMENSIONS ASSUMING AVERAGE AND DEPTH TO BE 1/2 OF MAXIMUM (REF 1) - PRODUCTION TO OF 150000 LONG TONS WAS SUBTRACTED TO ARRIVE AT RESERV

Reference information

Bibliographic references

  • Deposit

    Harrer, C.M., 1966, Wyoming iron-ore deposits: USBM IC-8315, p. 15.

  • Deposit

    Wilson, W.H., 1966, Mineral Resources of Wyoming: Geological Survey of Wyoming Bulletin 50, p. 108.

  • Deposit

    REF 1 IFOC MINERAL PROPERTY FILES FILE NO. 34.1 (DIMENSIONS
    [12-15-09, A.B. Wilson unable to verify this reference]

  • Deposit

    REF 2 GEOLOGIC SURVEY OF WYOMING, BULLETIN NO. 31 (GRADE INF
    [12-15-09, A.B. Wilson unable to determine where Cobar is in this reference]

General comments

Subject category Comment text
General "Magnetite Products Corp. (now Plicoflex, Inc.) formerly mined magnetite from an open-pit. In 1962, the company moved its operations to Iron Mountain." Bull. 50, p. 108.
Deposit REF 1 IFOC MINERAL PROPERTY FILES FILE NO. 34.1 (DIMENSIONS [Copied from the references section]

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-83 Barari, Rachel A. U.S. Geological Survey
Reporter 18-NOV-83 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Reporter 27-FEB-84 Wilson U.S. Bureau of Mines
Editor 15-DEC-09 Wilson, Anna B. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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