- Phosphate minerals
Phosphate minerals are those
minerals that contain the tetrahedrally coordinated phosphate(PO43-) anionalong with the freely substituting arsenate(AsO43-) and vanadate(VO43-). Chlorine(Cl-), fluorine(F-), and hydroxide(OH-) anions also fit into the crystal structure.
The phosphate class of minerals is a large and diverse group, however, only a few species are relatively common.
Phosphate rockis a general term that refers to rock with high concentration of phosphate minerals, most commonly of the apatite group. It is the major resource mined to produce phosphate fertilisers for the agriculture sector. Phosphate is also used in animal feed supplements, food preservatives, anti-corrosion agents, cosmetics, fungicides, ceramics, water treatment and metallurgy.
The largest use of minerals mined for their
phosphatecontent is the production of fertilizer.
Phosphate minerals are often used for control of rust and prevention of corrosion on ferrous materials applied with electrochemical conversion coatings.
* Hurlbut, Cornelius S.; Klein, Cornelis, 1985, "Manual of Mineralogy", 20th ed., John Wiley and Sons, New York ISBN 0-471-80580-7
* [http://webmineral.com/strunz/VII.shtml#VII/A Webmineral - Strunz]
* [http://webmineral.com/dana/VII-38.shtml Webmineral - Dana]
* [http://www.australianminesatlas.gov.au/info/aimr/phosphate.jsp - Australian Mineral Atlas]
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Phosphate minerals — ▪ Table Phosphate minerals name colour lustre Mohs hardness specific gravity amblygonite white to creamy white; slightly tinted vitreous to greasy 5½–6 3.0–3.1 apatite carbonate apatite variable, greens predominating vitreous 5 2.9–3.2… … Universalium
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 — Systematic name … Wikipedia
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 — 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
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