limonite

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limonite

limonite or brown hematite , yellowish to dark brown mineral, a hydrated oxide of iron, FeO(OH)· n H ₂ O, 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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limonite

A Dictionary of Earth Sciences | 1999 | | Â© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

limonite Mineral, FeO(OH).nH₂O; sp. gr. 2.7–4.3; hardness 4.0–5.3; yellowish-brown to reddish-brown; normally earthy lustre; usually amorphous; occurs as a secondary mineral from the weathering of iron in rocks and mineral deposits, and may accumulate to give iron-rich mineral deposits.

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AILSA ALLABY and MICHAEL ALLABY. "limonite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 15 Nov. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "limonite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (November 15, 2009). http://www.encyclopedia.com/doc/1O13-limonite.html

AILSA ALLABY and MICHAEL ALLABY. "limonite." A Dictionary of Earth Sciences. 1999. Retrieved November 15, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-limonite.html

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