from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A sedimentary rock consisting predominantly of apatite and other phosphates.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a sedimentary rock rich in phosphate minerals such as apatite

from the GNU version of the Collaborative International Dictionary of English

  • n. A massive variety of apatite.

from The Century Dictionary and Cyclopedia

  • n. A name applied originally to a massive variety of apatite, but now used to embrace the more or less impure earthy to compact calcium phosphate which forms beds of considerable magnitude in some localities (Estremadura in Spain, Bohemia, etc.), and is of much economic importance.


phosphor(us) + -ite1.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • Gypsum, phosphorite, and salt are the major minerals mined in the state; there are also small deposits of gold and silver.

    Baja California Sur - Overview

  • Near shore and offshore sediments hold rich deposits of minerals (diamonds, phosphorite, diatomite), as well as oil and gas reserves.

    Benguela Current large marine ecosystem

  • Phosphate rock is formed in oceans in the form of calcium phosphate, called phosphorite.

    Phosphate rock

  • This mineral is even less soluble than phosphorite, so that a direct application of apatite onto cultivated fields exhibits a fertilizing effect only after a period of 10 - 15 years.

    Chapter 20

  • This apatite, or phosphorite, is found in certain parts of the world in large masses; but as a rule, it only occurs in small quantities in most rocks.

    Manures and the principles of manuring

  • We have already referred in Chapter V. to large deposits of apatite or phosphorite found in Canada.

    Manures and the principles of manuring

  • Now, the solubility of Thomas-slag in citrate of ammonia was found by Professor Wagner to be no less than 74 per cent, while that of phosphorite only amounted to 4 per cent.

    Manures and the principles of manuring

  • This was superseded by coprolites and Estremadura phosphorite, Suffolk coprolites being for many years the chief material employed.

    Manures and the principles of manuring

  • Professor Fleischer has also tested the comparative solubility of basic slag and phosphorite, by boiling them in a solution of acetic acid.

    Manures and the principles of manuring

  • Coarse fragments of bone, powdered phosphorite and coprolite, Thomas-slag, farmyard manure 33

    Manures and the principles of manuring


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