cristobalite
/krɪˈstəʊbəlʌɪt
/noun [mass noun]
A form of silica which is the main component of opal and also occurs as small octahedral crystals.Analyses of some samples of the dense grey rimstone sinter showed weak reflections, indicating the possible presence of cristobalite....
- The conversion of feldspar to cristobalite involves the removal of water.
- Look up cristobalite in the textbook and describe a likely environment for the formation of this sample.
Origin
Late 19th century: named after Cerro San Cristóbal in Mexico, where it was discovered, + -ite1.
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