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cristobalite

[ kri-stoh-buh-lahyt ]

noun

, Mineralogy.
  1. a polymorph of quartz occurring in volcanic rock in the form of colorless, translucent crystals.

cristobalite

/ krɪsˈtəʊbəˌlaɪt /

noun

  1. a white microcrystalline mineral consisting of silica and occurring in volcanic rocks. Formula: SiO 2
“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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Word History and Origins

Origin of cristobalite1

1885–90; named after San Cristóbal, a hill near Pachuca de Soto, Mexico; -ite 1
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Word History and Origins

Origin of cristobalite1

C19: from German, named after Cerro San Cristóbal, Mexico, where it was discovered
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Example Sentences

The crystals, called cristobalite and tridymite, swim in clouds around stars just before they begin to form planets.

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