Rock phosphate is a general term for rock that contains a high concentration of
phosphate minerals, which commonly belong to the apatitegroup. Phosphate rock minerals are the only significant global resources of phosphorus. Phosphorusis an essential element for plant and animal nutrition. Mined rock phosphate is primarily used in the production of phosphate fertilisersfor agriculture. Phosphorus from rock phosphate is also used in animal feed supplements, food preservatives, anti-corrosion agents, cosmetics, fungicides, ceramics, water treatment and metallurgy [ [http://www.australianminesatlas.gov.au/aimr/commodity/phosphate.jsp Phosphate AIMR Report 2007] ] .
In the world, the
United Statesis the leading importer of phosphate rock, but the leading producer and exporter of phosphate fertilizers, accounting for about 37% of world P2O5 exports [ [http://minerals.usgs.gov/minerals/pubs/commodity/phosphate_rock/myb1-2006-phosp.pdf US Geological Survey Minerals Yearbook 2006 Rock Phosphate] ] . The world’s total economic demonstrated resourceof rock phosphate is 18 Gt, which occurs principally as sedimentarymarine phosphorites [ [http://www.australianminesatlas.gov.au/aimr/commodity/phosphate.jsp Phosphate AIMR Report 2007] ] .
* Rock phosphate is also known as
*http://minerals.usgs.gov/minerals/pubs/commodity/phosphate_rock/ USGS Phosphate Rock Statistics and Information
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rock phosphate — noun : phosphate rock used as a fertilizer … Useful english dictionary
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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
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