| LC control no. | sh 85049445 |
|---|---|
| LC classification | QE391.F6 Mineralogy TN948.F6 Mineral resources |
| Topical heading | Fluorspar |
| Variant(s) | Derbyshire spar Florspar Fluor Fluor spar Fluorite Murra Murrha Murrhina Myrrha |
| See also | Halide minerals Calcium fluoride |
| Found in | Amer. Herit. dict. of the Eng. lang., c2000 (fluorite: a mineral, essentially CaF[subscript 2], that is often fluorescent in ultraviolet light and occurs in light green, blue, yellow, brown, and colorless forms. Also called fluor, fluorspar) Academic Press dict. of sci. and tech., via WWW, July 9, 2001 (fluorite: Mineralogy. CaF[subscript 2], a transparent to translucent cubic mineral occurring in many colors as cubic crystals or in granular form, having a vitreous luster, a specific gravity of 3.18, and a hardness of 4 on the Mohs scale; found in various deposits and in sedimentary rocks; calcium fluoride: Inorganic Chemistry. CaF[subscript 2], a colorless to white powder that occurs in nature as fluorite or fluorspar) Random House Web. unabr. dict., c1997 (fluorspar. Mineral. fluorite. Also, fluor spar) Dict. of mining, mineral, and related terms, 1968 (Fluorite, fluorspar, florspar; murra, murrha: the Latin term for a material first brought to Rome by Pompey & used for costly vases and cups. It has been variously supposed to be Chinese jade, porcelain, iridescent glass, fluor, etc.) Glossary of geology, 2005 (fluorite. syn.: fluorspar, fluor, Derbyshire spar) Mineral information and data Web site, Apr. 23, 2007 (Murrhina: synonym of fluorite) Shorter Oxford Eng. dict., 1959 (murra, also murrha, myrrha: a substance of which precious vases and other vessels are made. Murrhine, adj., made of or pertaining to murra; M. glass: a modern fancy name for a delicate ware brought from the East and made of fluor-spar) Loewental, A.I. Vasa murrina in Journal of Roman studies, v. 39, 1949: p. 31 (By far the best theory is the identification with fluorspar (fluorite, fluor)) |
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