Iron ochre or iron ocher (, pale yellow, orange) is one of several minerals found in iron ore.
Description The term iron ochre, primarily used among mineral collectors, geologists, miners, and various other related professions, one of several iron ore minerals,Krivovichev V. G. Mineralogical glossary. Scientific editor A. G. Bulakh. — St.Petersburg: St.Petersburg Univ. Publ. House. 2009. — 556 p. — ISBN 978-5-288-04863-0 Common abrasives and pigments with a red-brown or brown-orange hue and the powdery consistency of ochre, were known under this name. The minerals include: hematiteThomas Egleston, Ph. D. Catalogue of Minerals and Synonyms. — Washington: Government Printing Office, 1887. — Fe2O3, a widespread iron mineral, one of the most important iron ores limonite — Fe2O3·Н2О, a mixture of secondary natural minerals, iron oxide hydrates goethiteKimmo Virtanen. Geological control of iron and phosphorus precipitates in mires of the Ruukki-Vihanti Area, Central Finland. — Geological Survey of Finland, 1994; — 69 p. — α-FeO(OH), a product of weathering of ores, a secondary iron mineral, the main component of limonite, part of brown iron ores lepidocrocite (also known as "brown iron ochre") — γ-FeO(OH),R. A. Lidin, L. L. Andreeva, V. A. Molochko, edited by R. A. Lidin. Constants of inorganic substances: reference book. 3-rd ed., stereotypical. — Moscow: Drofa, 2008 г. — 685 p. a secondary mineral, a product of the oxidation of iron ore minerals, found in brown iron ores ferric oxideSigvald Linné. Archaeological Researches at Teotihuacan, Mexico. Sigvald Linne, with a foreword by Staffan Brunius and introduction by George L. — The University of Alabama Press, 2003. — 236p. — Fe2O3 (oxides of iron), which also occurs naturally as the mineral magnetite ferrihydriteA.M.O. Mohamed. Principles and Applications of Time Domain Electrometry in Geoenvironmental Engineering. — Taylor & Francis, 2006. — 603 p. — Fe2O3·0.5H2O, is a widespread hydrous ferric oxyhydroxide mineral at the Earth's surface
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See also Ochre Ochre (disambiguation) Iron (disambiguation) Iron(III) oxide List of inorganic pigments Red pigments List of colors Lead ochres Antimony ochres Cobalt ochres Yellow