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rock phosphate

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  • Rock phosphate — is a general term for rock that contains a high concentration of phosphate minerals, which commonly belong to the apatite group. Phosphate rock minerals are the only significant global resources of phosphorus. Phosphorus is an essential element… …   Wikipedia

  • rock phosphate — noun : phosphate rock used as a fertilizer …   Useful english dictionary

  • Phosphate — Systematic name …   Wikipedia

  • Phosphate rock — or phosphorite is a general description applied to several kinds of rock which contain significant concentrations of phosphate minerals, which are minerals that contain the phosphate ion in their chemical structure.Many kinds of rock contain… …   Wikipedia

  • Phosphate minerals — are those minerals that contain the tetrahedrally coordinated phosphate (PO43 ) anion along with the freely substituting arsenate (AsO43 ) and vanadate (VO43 ). Chlorine (Cl ), fluorine (F ), and hydroxide (OH ) anions also fit into the crystal… …   Wikipedia

  • phosphate rock — ☆ phosphate rock n. any rock, esp. phosphorite, containing large amounts of phosphates, used as a raw material for making fertilizers, phosphorous chemicals, etc …   English World dictionary

  • Phosphate —  Ne doit pas être confondu avec Roche phosphatée. Phosphate …   Wikipédia en Français

  • phosphate rock — noun : a rock that consists of calcium phosphate largely in the form of apatite or carbonate apatite usually together with calcium carbonate and other minerals, that is useful in fertilizers and is a source of phosphorus compounds, and that… …   Useful english dictionary

  • phosphate — /fos fayt/, n. 1. Chem. a. (loosely) a salt or ester of phosphoric acid. b. a tertiary salt of orthophosphoric acid, as sodium phosphate. 2. Agric. a fertilizing material containing compounds of phosphorus. 3. a carbonated drink of water and… …   Universalium

  • phosphate mineral —       any of a group of naturally occurring inorganic salts of phosphoric acid, H3(PO4). More than 200 species of phosphate minerals are recognized, and structurally they all have isolated (PO4) tetrahedral units. Phosphates can be grouped as:… …   Universalium

  • Phosphate — A form of phosphoric acid. Calcium phosphate makes bones and teeth hard. * * * 1. A salt or ester of phosphoric acid. For individual phosphates not listed here, see under the name of the base. 2. The trivalent ion, PO43−. bone p. SYN: tribasic… …   Medical dictionary

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