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cristobalite
(redirected from Crystobalite)

    Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
cristobalite [krɪsˈtəʊbəˌlaɪt]
n
(Earth Sciences / Minerals) a white microcrystalline mineral consisting of silica and occurring in volcanic rocks. Formula: SiO2
[from German, named after Cerro San Cristóbal, Mexico, where it was discovered]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.cristobalite - a white mineral consisting of silica; found in volcanic rocks
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
silica, silicon dioxide, silicon oxide - a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
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quartz 575[degrees]C- -Quartz 870[degrees]C -tridymite 1470[degrees]C- -cristobalite 1750[degrees]C liquid Of these phases, quartz is the most critical one in as much as it is susceptible to conversion during high temperature service to the less dense crystobalite and tridymite, which is the reason for the expansion taking place.
Production of silica-refractory bricks from white sand by Almarahle, Gazze / American Journal of Applied Sciences
 
 
 
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