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what sand usually have lessiron content

Sand - Wikipedia, the free encyclopedia

The 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 ...

Sand casting - Wikipedia, the free encyclopedia

Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand as the mold material. The term "sand casting" can also …

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sandstone: Definition from Answers

sandstone, sedimentary rock formed by the cementing together of grains of sand. The usual cementing material in sandstone is calcium carbonate, iron oxides, or silica ...

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