sand wikipedia - EAS
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Sand is a granular material composed of finely divided rock and mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85
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See moreThe exact definition of sand varies. The scientific Unified Soil Classification System used in engineering and geology corresponds to US Standard Sieves, and defines sand as particles with a diameter of between 0.074 and 4.75
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See moreRocks erode or weather over a long period of time, mainly by water and wind, and their sediments are transported downstream. These sediments continue to break apart into smaller pieces until
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See moreThe study of individual grains can reveal much historical information as to the origin and kind of transport of the grain. Quartz sand that is recently weathered from granite or gneiss quartz crystals will be angular. It is called grus in geology or sharp sand in the
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See more• Abrasion: Before sandpaper, wet sand was used as an abrasive element between rotating devices with elastic surface and hard materials such as very hard stone (making of stone vases),
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See moreOnly some sands are suitable for the construction industry, for example for making concrete. Because of the growth of population and of cities and the consequent construction
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See moreWhile sand is generally non-toxic, sand-using activities such as sandblasting require precautions. Bags of silica sand used for sandblasting now
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See moreManufactured sand (M sand) is sand made from rock by artificial processes, usually for construction purposes in cement or concrete. It
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See moreWikipedia text under CC-BY-SA license Sand! is a 1920 American silent Western film directed by Lambert Hillyer and written by Lambert Hillyer based upon the Russell A. Boggs short story "Dan Kurrie’s Inning." The film stars William S. Hart, Mary Thurman, G. Raymond Nye, Patricia Palmer, Bill Patton, and S.J. Bingham. It was released on June 20, 1920, by Paramount Pictures.
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