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(līm´ nīt)
or brown hematite
(hĕm´tīt, hē´—)
, yellowish to dark brown mineral, a hydrated oxide of iron, FeO(OH)·nH2O, occurring commonly in deposits of secondary origin, i.e., those formed by the alteration of minerals containing iron. Both iron rust and bog iron ore are limonite. It serves as a pigment (see ocher) and as an ore of iron. It is found mainly in Austria and England.
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