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mineral impurities

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  • Mineral CSA (brand) — Mineral CSA is a finely ground calcium silicate feedstock produced by the U.S. based company Harsco Minerals, which provides a solution for correcting acidic conditions and managing toxic metals associated with acid mine drainage (AMD). Mineral… …   Wikipedia

  • Heliotrope (mineral) — The mineral heliotrope, also known as bloodstone, is a form of chalcedony, which is a cryptocrystalline quartz. The classic bloodstone is green jasper with red inclusions of iron oxide (red jasper). Sometimes yellow and/or other colors of jasper… …   Wikipedia

  • Caliche (mineral) — Caliche is a hardened deposit of calcium carbonate. This calcium carbonate cements together other materials, including gravel, sand, clay, and silt. It is found in aridisol and mollisol soil orders. Caliche occurs worldwide, generally in arid or… …   Wikipedia

  • Fluorite — General Category Halide mineral Chemical formula CaF2 …   Wikipedia

  • Marble — For other uses, see Marble (disambiguation). Marble …   Wikipedia

  • Jasper — is an opaque, [ [http://www.mindat.org/min 2082.html Mindat: Jasper profile] ] impure variety of silica, usually red, yellow or brown in color. This mineral breaks with a smooth surface, and is used for ornamentation or as a gemstone. It can be… …   Wikipedia

  • Chalcedony — A cut and polished Chalcedony geode General Category Oxide mineral Chemical formula …   Wikipedia

  • Quartzite — Swan Peak Quartzite (Ordovician) ex …   Wikipedia

  • Louis Comfort Tiffany — c.1908 Born February 18, 1848(1848 02 18) New York, New York Died …   Wikipedia

  • Cloak of Conscience — Chromy with Cloak of Conscience, Jan 2011 Artist Anna Chromy Year 2006 2011 Type Marble Dimensions 430 cm × 280 cm (170 i …   Wikipedia

  • Purbeck Marble — is a fossiliferous limestone quarried in the Isle of Purbeck, a peninsula in south east Dorset, England.It is one of many kinds of Purbeck Limestone, deposited in the late Jurassic or early Cretaceous periods.Purbeck Marble is not a metamorphic… …   Wikipedia

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