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spodumene

[spoj-oo-meen] /ˈspɒdʒ ʊˌmin/
noun
1.
a mineral, lithium aluminum silicate, LiAlSi 2 O 6 , occurring in prismatic crystals, transparent varieties being used as gems.
Origin
1795-1805
1795-1805; < French spodumène < German Spodumen < Greek spodoúmenos, present participle of spodoûsthai to be burned to ashes (derivative of spodós wood ash)
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for spodumene
  • These cross-cutting, late-stage quartz veins are also home to the only true emerald-green spodumene crystals in the world.
  • Photograph of the lithium- bearing mineral spodumene.
British Dictionary definitions for spodumene

spodumene

/ˈspɒdjʊˌmiːn/
noun
1.
a greyish-white, green, or lilac pyroxene mineral consisting of lithium aluminium silicate in monoclinic crystalline form. It is an important ore of lithium and is used in the manufacture of glass and ceramics and as a gemstone. Formula: LiAlSi2O6
Word Origin
C19: from French spodumène, from German Spodumen, from Greek spodoumenos, from spodousthai to be burnt to ashes, from spodos wood ash
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for spodumene

a lithium aluminum silicate mineral (LiAlSi2O6) in the pyroxene family, an important ore of lithium and a source of ceramic materials. It is ordinarily found in lithium-bearing granite pegmatites. When brilliant and glassy, clear spodumene is valued as a semiprecious gem (more by collectors and museums than by the public, because its colour fades when it is exposed to sunlight). Its main varieties are hiddenite (emerald green) and kunzite (pink or lilac). The largest crystal of spodumene found is 14.3 metres (about 47 feet) long and 0.8 metre (about 3 feet) wide from the Etta mine in South Dakota, U.S

Learn more about spodumene with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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