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Land Pebble Phosphate District

Producer in Polk county in Florida, United States with commodities Phosphorus-Phosphates, Fluorine-Fluorite, Uranium, Zirconium, Titanium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Mineral occurrence model information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 60001561
MRDS ID W001321
Record type District
Current site name Land Pebble Phosphate District
Alternate or previous names Florida Phosphate District
Included sites Central Land Pebble Phosphate District, Big Four, Bony Lake, Clear Springs, Fort Green, Fort Maede (Gardinier), Fort Maede (Mobil), Haynsworth, Hooker's Prairie, Kingsford, Lonestone, Noralyn, Nichols, Payne Creek, Phosphoria, Polk County, Rockland, Saddle Creek, Silver City, Stuard Tract, Watson Mines, Duette, Four Corners Developments, Southern Land Pebble Phosphate District

Geographic coordinates

Point of reference Approximate
Geographic coordinates: -81.91101, 27.84636 (WGS84)
Location accuracy 500(meters)
Relative position Point placed in center area of district on a mine. This is only an approximation because points do not delineate large districts.

Site location context

Political divisions (FIPS codes)

Polk(county)

Florida(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bradley Junction(quadrangle 1:24,000 scale)

Bartow(quadrangle 1:100,000 scale)

Fort Pierce(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alafia(hydrologic unit)

Tampa Bay(hydrologic accounting unit)

Peace-Tampa Bay(hydrologic subregion)

South Atlantic-Gulf(hydrologic region)

Geographic areas

Country State County
United States Florida Polk
United States Florida Hardee
United States Florida Hillsborough
United States Florida Manatee
United States Florida DeSoto

Commodities

Commodity Importance
Phosphorus-Phosphates Primary
Fluorine-Fluorite Critical Secondary
Uranium Tertiary
Zirconium Critical Tertiary
Titanium Critical Tertiary

Mineral occurrence model information

Model code 244
USGS model code 34d
Deposit model name Phosphate, warm current type

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Phosphorite
    Rock unit name Hawthorn Formation
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Phosphorite
    Rock unit name Bone Valley Formation
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Phosphorite

Nearby scientific data

Approximate (1) -81.91101, 27.84636
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure name Basin on Flank of Rising Dome

Comments on the geologic information

  • From Zellers and Williams (1978): Phosphate, phosphorite debris, and dead marine organisms were deposited in Miocene times. These deposits were being reworked penecontemporaneously with deposition and redeposited with primary carbonate forming the Hawthorn Formation. In upper Miocene, this area was subjected to fulvial erosion where phosphorite, carbonate, sand, silt, and clay were deposited in low areas. The area was subject to a cyclic sytem that reworked and concentrated the phosphate and probably newly precipitated phosphate into economic concentrations. The reworked deposits, formed mostly during the Pliocene, now form the Bone Valley Formation and its equivalents. Reworking of the Bone Valley Formation during Late Pliocene- Pleistocene also deposited some phosphorite sands.
  • Weathering leached the calcium phosphate minerals causing enrichment in the underlying strata. Aluminum phosphates remained behind with uranium minerals.
  • From Zellers and Williams (1978)Table 1, p. 33 (combined info from Central and Southern: Overburden thickness 20-40 ft, ore zone thickness 15-35 ft, percent BPL 66-72, percent MgO up to 0.8, percent U3O8 0.009 to 0.012, percent fluorine 2.5-3.5, and pebble percent product 10-60.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Significant Yes
Discovery year 1888
Mining method Strip-Area
Year of first production 1890

Mining district

District name FLORIDA PHOSPHATE DISTRICT
District name Land Pebble Phosphate District

Mineral rights holdings

Type of mineral rights Fee Ownership

Ownership information

  • Type Owner-Operator
    Owner Mosaic
    Year 2005
  • Type Owner-Operator
    Owner CF Industries
    Year 2005
  • Type Owner-Operator
    Owner US Agricultural Chemicals
    Year 2005
  • Type Owner-Operator
    Owner Estech Inc.
    Year 2005
  • Type Owner-Operator
    Owner Mobil/Exxon
    Year 2005
  • Type Owner
    Owner Agrifos LLC
    Year 2005
  • Type Owner
    Owner Clear Springs Land Development
    Year 2005
  • Type Owner-Operator
    Owner Max
  • Type Owner-Operator
    Owner Beker
  • Type Owner-Operator
    Owner Brewster
  • Type Owner-Operator
    Owner W. R. Grace
  • Type Owner
    Owner TMCC

Comments on the ownership information

  • In 2005, Mosaic and CF Industries were the only phosphate companies operating in the Central Land Pebble Phosphate District. (Bay Soundings, 2005)

Production statistics

  • Year 1978
    Period 1891-1977
    Material 669,146,000 long tons sold or used by producers in the Land Pebble Phosphate district, which n this case includes the Northern and Central phosphate districts plus some production from North Carolin

Reference information

Bibliographic references

  • Deposit

    LAMONT 1969 AIME, MI. ENG. PREPRINT 69B

  • Ownership

    Bay Soundings, 2005, Bone Valley: on-line accessed Oct. 29, 2010, at http://baysoundings.com/sum05/BoneValley.pdf#rush.

  • General

    Zellars, M.E., and Williams, J.M., 1978, Evaluation of the phosphate deposit of Florida using the Minerals Availability System: U.S. Bureau of Mines Open File Report 112-78, 196 p. (prepared for the United States Department of the Interior, Bureau of Mines Contract No. J0377000.

  • Deposit

    CATHCART, J.B., SHELDON R.P., AND GULBRANDSEN, R.A., 1983: U.S. GEOLOGICAL SURVEY, CIRCULAR 888

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-73 FORCE, ERIC R. U.S. Geological Survey
Updater 01-NOV-10 Causey, J. Douglas U.S. Geological Survey Combined data from another MRDS record (Dep_ID 60000665 and MRDS ID ISM0356.

Beyond USGS

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

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