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zircon

[zur-kon] /ˈzɜr kɒn/
noun
1.
a common mineral, zirconium silicate, ZrSiO 4 , occurring in small tetragonal crystals or grains of various colors, usually opaque: used as a refractory when opaque and as a gem when transparent.
Origin
1785-1795
1785-95; < German Zirkon; see jargon2
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for zircons

zircon

/ˈzɜːkɒn/
noun
1.
a reddish-brown, grey, green, blue, or colourless hard mineral consisting of zirconium silicate in tetragonal crystalline form with hafnium and some rare earths as impurities. It occurs principally in igneous rocks and is an important source of zirconium, zirconia, and hafnia: it is used as a gemstone and a refractory. Formula: ZrSiO4
Word Origin
C18: from German Zirkon, from French jargon, via Italian and Arabic, from Persian zargūn golden
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for zircons

zircon

n.

1794, new name given in chemistry to jacinth, from German Zirkon (cf. French jargon, Italian giargone), from Arabic zarqun "cinnabar, bright red," from Persian zargun "gold-colored," from Avestan zari- "gold-colored," from zar "gold."

Online Etymology Dictionary, © 2010 Douglas Harper
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zircons in Science
zircon
  (zûr'kŏn')   
A brown, reddish to bluish, gray, green, or colorless tetragonal mineral that occurs in igneous, metamorphic, and sedimentary rocks, and especially in sand. The colorless varieties are valued as gems. Chemical formula: ZrSiO4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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