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Project at a Glance Contents on the CD ROM
  • Phosphatic clay are Very small particles that are separated from phosphate ore less than 140 mesh. It consists of a mixture of very fine phosphate
    rock particles and naturallyoccurring clay minerals it can be Concentrated but not created or chemically altered by processing of ore.
  • The phosphatic clay resource is a by-product of phosphate mining in central Florida. This resource currently occupies approximately 100,000 acres.
  • The clay in the ponds came out of the ground as part of the matrix, which naturally contains the radioactive elements uranium and radium. Some of this radioactivity ends up going to the clay ponds.
  • Phosphatic clay sediment in the ponds have a higher level of radioactivity than sediment in natural lakes, but the water is like other lake water. When the pond settles the soil has higher levels of radioactivity than normal soil.
  • Characteristics of Phosphatic Clay are (i) Very high fertility (ii) Very high retention capacity for moisture and applied nutrients (iii) Drainage can be a problem (iv) Tillage characteristics similar to other heavy clay soils.
  • Reclaimed soils and phosphatic clays can successfully produce agricultural crops. In many instances water retention are better in reclaimed versus
    native soils.
  • A 2 to 3 year cropping system consisting of legumes or other green manure crops augments organic matter and physical characteristics of the soil.
  • Two primary factors can be addressed by the grower before tillage of phosphatic clay. The primary factor controlling clod size is soil moisture within the depth of soil to be tilled. Wetter soil conditions will result in larger clods. Dryer soil conditions during tillage will produce smaller clods. In
    the case of phosphatic clay, soil moisture should be a major consideration in deciding if and when to till.
  • Phosphatic clay, a waste by-product of the phosphate mining industry, used as an effective sorbent for Pb from aqueous effluents. The major
    parameters controlling aqueous Pb removal, viz. initial metal ion concentrations, solution pH, sorbent amounts, ionic strength and presence of both inorganic and organic ligands were evaluated using batch experiments.
  • Florida is the largest domestic producer of phosphates.
General Information
  • Radioactivity and Phosphatic Clay Ponds
  • Commercial agriculture on reclaimed land

Mining Company & Consultant

  • Company from Florida
  • Company from Iraq
  • Consultant from America
  • Consultant from Bartow
  • Consultant from Florida
  • Consultant from Orlando
  • Consultant from US


  • Crust formation and desiccation characteristics for phosphatic clays
  • The Determination of BoundWater inWaste Phosphatic Clay
  • Production and Management of Biomass/Energy Crops on
    Phosphatic Clay in Central Florida
  • The Critical Role Of Soil Organic Matter (SOM) In Reclaiming Phosphate Mining Clay Settling Areas
  • Phosphate and Tripolyphosphate Adsorption
    by Clay Minerals and Estuarine Sediments.
  • Stabilization of phosphatic clay with lime columns.
  • Vegetable Seed Bed Preparation on Phosphatic Clays


  • Phosphatic Clay for Agricultural Uses: Bibliography
  • Characterization of aqueous lead removal by phosphatic clay: Equilibrium and kinetic studies
  • Control of Florida red tide using Phosphatic clay
  • Towards a more safe environment: III. Phosphatic clays as solution for removing Pb2+ from wastewater
  • Utilization of Phosphatic clay waste in concrete
  • Wetlands reclaimation using sand-clay mix from phosphate mine


  • The Aggregation of Clay Minerals and Marine
    Microalgal Cells: Physicochemical Theory and
    Implications for Controlling Harmful Algal Blooms
  • Engineering evaluation of waste phosphatic clay for producing low permeability barriers.
  • Integrating Control of Flocculant Delivery in a Phosphatic Clay
    Thickening Circuit
  • Recovery of phosphate from florida phosphatic clays
  • State of the art of phosphatic clay dewatering technology and disposal techniques
Mining Process
  • Above-ground growth and radium-226 uptake of cover crops grown an phosphogypsum and phosphatic clay from a phosphate mine in north carolina
  • An evaluation of wetland habitat establishment and wildlife utilization in phosphate clay settling areas
  • Landscape Diversity: Multiple-Use Landscapes for Reclaimed Phosphatic Clay Areas
  • Matching tree species to site conditions in reclaimation
  • Plants/Mines
  • Response of desmanthus to clipping on a phosphatic clay mine spoil
  • Phosphate Mine Tailings

Research & Project

  • National mine land reclaimation center overview of projects
  • Commercial products from phosphatic clays: A pre-feasibility study
  • FIPR Research
  • Mining and Benification


  • Alkaline phosphate-activated clay/zeolite catalysts
  • Treatment of phosphatic wastes
  • Process for treating phosphatic clay suspensions

Properties & MSDS

  • Evaluation of Phosphatic clay disposal and reclaimation methods
  • Heavy Metal Interactions with Phosphatic Clay: Sorption and Desorption Behavior
  • Geotechnical properties of florida phosphatic clays
  • Effects of Phosphatic Clay Dispersal at Two Divergent Sites in Puget Sound, Washington
  • Physico-chemical properties of florida phosphatic clays
  • The composition and rheology of the florida phosphatic waste clay slurries: geotechnical implications
  • Calphos

Report & Market

  • Removal of Prymnesium parvum through clay and chemical flocculation
  • Subsidence of suspensions of phosphatic slime and its major constituents
  • Viability of wetlands trees after twenty years on phosphatic clay settling areas and their role in ecosystem developement
  • Market opportunities for feed grains and alfalfa hay produced on reclaimed phosphatic clay in florida
  • Soft Rock Phosphate and Fertility

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