Croton Magnetite Iron Mines

Past Producer in Putnam county in New York, United States with commodities Copper, Iron
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10199535
MRDS ID W000140
MAS/MILS ID 0360790020
Record type Site
Current site name Croton Magnetite Iron Mines
Alternate or previous names Theall Mine, Mc Collum Mine
Related records 10067395

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -73.65265, 41.36689 (WGS84)
Elevation 140
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Putnam(county)

New York(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Croton Falls(quadrangle 1:24,000 scale)

Bridgeport(quadrangle 1:100,000 scale)

Hartford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Hudson(hydrologic unit)

Lower Hudson(hydrologic accounting unit)

Lower Hudson-Long Island(hydrologic subregion)

Mid Atlantic(hydrologic region)

Geographic areas

Country State County
United States New York Putnam

Commodities

Commodity Importance
Copper Tertiary
Iron Tertiary

Materials information

Materials Type of material
Amphibole Unknown
Apatite Unknown
Biotite Unknown
Chalcopyrite Unknown
Hornblende Unknown
Ilmenite Unknown
Magnetite Unknown
Pyrite Unknown
Pyrrhotite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -73.65265, 41.36689

Economic information

Ore body information

  • Strike N40E
    Dip 85S
    Thickness 457M
    Length 1220M
    Width 23M
    Area 19HA
    Depth to top 24M
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Primary mode of Origin METAMORPHISM
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control OTHER
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. NONE
    Strike And Dip N40E:85S
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 19
    Date of Last Modification 830407

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1880

Mining district

District name Brewster Magnet

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Unknown
    Owner Nipissing Mining Co., Ltd. (Parent Co. Of Croton)
    Home office Canada
    Year 1976

Reserves and resources

  • Type In-situ
    Estimate year 1968
    Inferred 10000000mt ore
    Total resources 10000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe2O3 28.48 wt-pct Iron Trace 1968

Reference information

Bibliographic references

  • Deposit

    COLONY, R. J. THE MAGNETITE IRON DEPOSITS OF SOUTHEASTERN NE

  • Deposit

    NEW YORK STATE MUSEUM BULL. 249-250, 1921, PP. 118-120.

  • Deposit

    PRUCHA, J. J. GEOLOGY OF THE BREWSTER MAGNETITE DISTRICT OF

  • Deposit

    EASTERN NEW YORK. NEW YORK STATE MUSEUM BULL. 43, 1956, PP.

  • Deposit

    PRUCHA, J. J., D. M. SCOTFORD, R. M. SNEIDER. BEDROCK GEOLOG

  • Deposit

    PARTS OF PUTNAM AND WESTCHESTER COUNTIES, NEW YORK, AND FAIR

  • Deposit

    COUNTY, CONNECTICUT. NEW YORK STATE MUSEUM MAP AND CHART SER

  • Deposit

    11, 1968, P. 22.

General comments

Subject category Comment text
Deposit DATE ENTERED/1977 RECORD 010, FIELD 22-25/CU IN MAGNETITE LENS IN GNEISS, MINE RESOURCES MAP, NO. 13., .1-.2% CU PRUCHA, 1956, P. 39. RECORD 040, FIELD 50-64/NEAR CROTON FALLS RESERVOIR AND SUBU RECORD 080, FIELD 15-27/METAMORPHIC DIFFERENTIATION HAS PROD NARROW BANDS AND LENSES OF MAGNETITE RECORD 050, FIELD 22-29/PRODUCTION 100,000 TONS FE ORE MATRIX/ECONOMIC PROSPECTS FOR RENEWED MINING POOR DUE TO NEE UNDERGROUND MINING, RESERVOIR WATERSHED AND SUBURBAN RESIDEN

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 Brocoum, A. U.S. Bureau of Mines

Beyond USGS

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