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siderite
siderite (chalybite, spathose iron) Mineral, FeCO3; sp. gr. 3.8–4.0; hardness 3.5–4.5; trigonal; grey to grey-brown or yellowish-brown, translucent when pure; white streak; vitreous lustre; uneven fracture; crystals rhombohedral with curved faces, but also occurs massive, granular, fibrous, compact, botryoidal, and earthy in habit; cleavage perfect rhombohedral {1011}; widespread in sedimentary rocks, especially clays and shales where it is concretionary and makes clay into ironstone, also as a gangue mineral in hydrothermal veins together with other metallic ores (e.g. pyrite, chalcopyrite, and galena) and as a replacement mineral in limestone; dissolves slowly in cold, dilute hydrochloric acid, which effervesces when warmed.
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AILSA ALLABY and MICHAEL ALLABY. "siderite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "siderite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O13-siderite.html AILSA ALLABY and MICHAEL ALLABY. "siderite." A Dictionary of Earth Sciences. 1999. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-siderite.html |
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siderite
sid·er·ite / ˈsidəˌrīt/ • n. 1. a brown mineral consisting of ferrous carbonate, occurring as the main component of some kinds of ironstone or as rhombohedral crystals in mineral veins. 2. a meteorite consisting mainly of nickel and iron. DERIVATIVES: sid·er·it·ic / ˌsidəˈritik/ adj. |
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"siderite." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "siderite." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O999-siderite.html "siderite." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-siderite.html |
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siderite
siderite or chalybite , a mineral, varying in color from brown, green, or gray to black and occurring in nature in massive and crystalline form. A carbonate of iron, FeCO 3 , it serves as an iron ore, especially in the British Isles. It is widely distributed, being found also in the United States, Europe, South America, and Australia. |
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"siderite." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "siderite." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1E1-siderite.html "siderite." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-siderite.html |
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siderite
siderite †loadstone XVI; various min. uses from XVIII. In early use — F. sidérite or L. sidērītēs, -ītis — Gr. sidēítēs, — îtis, f. sídēros iron; in later use f. Gr. sídēros; see -ITE.
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T. F. HOAD. "siderite." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "siderite." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O27-siderite.html T. F. HOAD. "siderite." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-siderite.html |
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Siderite
SideriteAn old name for a loadstone or magnet. The term has also been variously used to indicate a steel-colored stone (possibly sapphire), a blue-colored quartz, carbonate of iron, and meteorites containing iron. |
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"Siderite." Encyclopedia of Occultism and Parapsychology. 2001. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "Siderite." Encyclopedia of Occultism and Parapsychology. 2001. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1G2-3403804120.html "Siderite." Encyclopedia of Occultism and Parapsychology. 2001. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1G2-3403804120.html |
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siderite
siderite Another name for an iron meteorite.
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Cite this article
"siderite." A Dictionary of Astronomy. 1997. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "siderite." A Dictionary of Astronomy. 1997. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O80-siderite.html "siderite." A Dictionary of Astronomy. 1997. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-siderite.html |
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