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fluorspar

[floo-awr-spahr, -er-] /ˈflu ɔrˌspɑr, -ər-/
noun, Mineralogy
1.
Also, fluor spar.
Origin
1785-1795
1785-95; fluor- + spar3
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for fluorspar

fluorspar

/ˈflʊəˌspɑː/
noun
1.
a white or colourless mineral sometimes fluorescent and often tinted by impurities, found in veins and as deposits from hot gases. It is used in the manufacture of glass, enamel, and jewellery, and is the chief ore of fluorine. Composition: calcium fluoride. Formula: CaF2. Crystal structure: cubic Also (US and Canadian) fluorite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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