Iron ochre
{{Infobox mineral
| image =Mineral Limonita GDFL050.jpg}}
{{Other uses|Ochre (disambiguation)}}
{{Other uses|Iron (disambiguation)}}
Iron ochre or iron ocher ({{langx|grc|ὠχρός}}, pale yellow, orange) refers to at least three 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{{rp|134}} common abrasives and pigments with a red-brown or brown-orange hue and the powdery consistency of ocher, were known under such a trivial name. The term “iron ocher” was primarily used among mineral collectors, geologists, miners and representatives of related craft professions. It may refer to:
Essential minerals
- Iron ochre or hematiteThomas Egleston, Ph. D. Catalogue of Minerals and Synonyms. — Washington: Government Printing Office, 1887.{{rp|85}} — Fe2O3,{{rp|212}} a widespread iron mineral, one of the most important iron ores;
- Iron ochre or limonite{{rp|85}} — Fe2O3·Н2О,{{rp|30}} a mixture of secondary natural minerals, iron oxide hydrates;
- Iron ochre or 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.{{rp|30}} — α-FeO(OH), a product of weathering of ores, a secondary iron mineral, the main component of limonite, is part of brown iron ores;
- Iron ochre, brown iron ocher or lepidocrocite — 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.{{rp|236}} a secondary mineral, a product of the oxidation of iron ore minerals, found in brown iron ores;
- Iron ochre or 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.{{rp|212}} — Fe2O3 (oxides of iron), which also occurs naturally as the mineral magnetite;
- Iron ochre or ferrihydriteA.M.O. Mohamed. Principles and Applications of Time Domain Electrometry in Geoenvironmental Engineering. — Taylor & Francis, 2006. — 603 p.{{rp|338}} — Fe2O3·0.5H2O, is a widespread hydrous ferric oxyhydroxide mineral at the Earth's surface;
Gallery
Hematite.jpg|{{center|Hematite}}
LimoniteUSGOV.jpg|{{center|Limonite}}
Goethite - Colli Euganei, Italia.jpg|{{center|Goethite}}
Lepidocrocite-170212.jpg|{{center|Lepidocrocite}}
Eisen(III)-oxid.JPG|{{center|Ferric oxide}}
Ferrihydrite.jpg|{{center|Ferrihydrite}}
References
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