scheelite

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schee·lite

 (shā′līt′, shē′-)
n.
A variously colored mineral, CaWO4, found in igneous rocks and used as an ore of tungsten.

[After Carl Wilhelm Scheele.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

scheelite

(ˈʃiːlaɪt)
n
(Minerals) a white, brownish, or greenish mineral, usually fluorescent, consisting of calcium tungstate in tetragonal crystalline form with some tungsten often replaced by molybdenum: occurs principally in contact metamorphic rocks and quartz veins, and is an important source of tungsten and purified calcium tungstate. Formula: CaWO4
[C19: from German Scheelit, named after Karl Wilhelm Scheele (1742–86), Swedish chemist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

scheel•ite

(ˈʃeɪ laɪt, ˈʃi-)

n.
a mineral, calcium tungstate-molybdate, Ca(WO4MoO4), occurring in crystals and aggregates: an ore of tungsten.
[1830–40; < German Scheelit= Karl Wilhelm Scheele (1742–86), Swedish chemist, who first isolated tungstic acid + -it -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.scheelite - a mineral used as an ore of tungsten
atomic number 74, tungsten, W, wolfram - a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
(50, 51) Zirconium oxide and calcium tungstate have been tested, but large amounts are required to provide similar radiopacity to that of bismuth oxide, and deterioration of the physical and chemical properties of the material would therefore be expected.
In the literature, there are many studies which evaluate the radiopacity of many agents as bismuth oxide, zinc oxide, barium sulfate, calcium tungstate, and zirconium oxide [12,13].
[30], radiopacity of AH-Plus is provided by zirconium oxide and calcium tungstate and suggested that its radiopacity could vary in different published studies because of the deposition of radiopacifying agents at the lower end of the tube, whereas the upper portion can present a lower quantity of its substance [19].