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[lahy-muh-nahyt] /ˈlaɪ məˌnaɪt/
noun, Mineralogy
an amorphous hydrated ferric oxide, varying in color from dark brown to yellow, used as an ore of iron.
Origin of limonite
1815-25; < Greek leimṓn meadow + -ite1
Related forms
[lahy-muh-nit-ik] /ˌlaɪ məˈnɪt ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for limonite
  • The rock cleaves along finely laminated bedding planes which are coated with limonite.
  • limonite specimens found in the field coated with clay.
  • Occasionally, large pseudomorphs of limonite after pyrite can be found in these areas as well.
  • On this image, white and yellow colors indicate rocks rich in clay minerals and limonite in rocks of red and yellow hues.
  • Much of the material was spiderwebbed with thin veinlets of limonite.
  • The breccia is limonite-stained, but pyrite and/or marcasite has only been observed in the altered siltstone.
  • It was enveloped in a biological shield made of high-density concrete containing scrap iron and limonite.
British Dictionary definitions for limonite


a common brown, black, or yellow amorphous secondary mineral that consists of hydrated ferric oxides and is a source of iron. Formula: FeO(OH).nH2O
Derived Forms
limonitic (ˌlaɪməˈnɪtɪk) adjective
Word Origin
C19: probably from Greek leimōn, translation of earlier German name, Wiesenerz meadow ore
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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