siderite

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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

A Dictionary of Astronomy | 1997 | Â© A Dictionary of Astronomy 1997, originally published by Oxford University Press 1997. (Hide copyright information) Copyright

siderite Another name for an iron meteorite.

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	Predicting iron staining of siderite-bearing microsyenites intended for dimension stone use. Magazine article from: Construction and Building Materials; 3/1/2008; ; 700+ words ; ...performance of a microsyenite rock containing siderite, as a secondary mineral phase, from...have shown through petrography that the siderite secondary mineral in the Mt Gibraltar...Although the in situ oxidation of the siderite is visually observable, as pinhole...
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	Yaxing Group commissions 2 mln-ton siderite selecting facility in Xinjiang. Newspaper article from: China Business News; 11/20/2007; 582 words ; Yaxing Group commissions 2 mln-ton siderite selecting facility in Xinjiang Shanghai...kicked off operations at a 2 million-ton siderite selecting facility in Artux City in the...selecting capacity of 2 million tons of siderite per year, as well as 1.2 million tons...
	Materials handbook.(Magnesium Aluminate--Siderite)(Buyers Guide) Magazine article from: Ceramic Industry; 1/1/2005; 700+ words ; MAGNESIUM ALUMINATE. (Spinel.) MgO-[Al.sub.2][O.sub.3]. M.p. 2135[degrees]C; softens at 1000-1100[degrees]. (See SPINEL.) MAGNESIUM ALUMINUM SILICATE. (See BINDERS.) MAGNESIUM ALUMINUM SILICATE SUPPLIERS R. T. VANDERBILT, CO. INC. P.O. Box 5150 Norwalk, CT 06856-5150 U.S.A. (203) 853-1400 Fax:
	Structurally preserved Paleozoic plant fossils: from the Cahaba coal field Jefferson Country, Alabama. Magazine article from: Rocks & Minerals; 5/1/2007; ; 700+ words ; ...large amounts of coalified plant debris and siderite nodules (figs. 3, 4). Rarely, the plant...tissue present. Most were simply fine-grained siderite replacing pith cavities and siderite masses with compressed and coalified plant...
	Mineralogical examination of carbonates in the Crandon tailings Magazine article from: Minerals & Metallurgical Processing; 5/1/2003; ; 700+ words ; ...to 15% (by weight) iron and lesser amounts of siderite and magnesian siderite. The proportion of calcium and magnesium-rich...However, some types of carbonates (e.g., siderite) are not capable of buffering acidity (Lapakko...
	LAWRENCE, Kan.: Kansas Geological Survey Researchers Receive Grant To Study Ancient Climate News Wire article from: Targeted News Service; 8/20/2007; 573 words ; ...will use it to study the formation of siderite, a type of iron mineral, in today...environment. By better understanding how siderite is formed at present, they can learn more about the climate when siderite was formed in the past. In particular...
	New findings from University of Zagreb in the area of mineralogy and petrology published. Newspaper article from: Mining & Minerals; 12/25/2009; 700+ words ; ...incorporated into the northwestern Dinarides during the Alpine orogeny. They host numerous siderite-quartz-polysulphide, siderite-chalcopyrite, siderite-galena and barite veins, as well as stratabound hydrothermal-replacement ankerite...
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	Bakalskoye Mining to boost output 8% in 2007. Newspaper article from: Russia & CIS Business and Financial Newswire; 1/18/2007; 422 words ; ...plans to increase production of roasted siderite concentrate by 9.8% to 860,000 tonnes and output of sintered siderite by 14.8% to 490,000 tonnes. Commercial...than in 2005. Iron content in roasted siderite and sintered siderite amounted to respectively...