One of the mysteries of the English language finally explained.
A form of silica which is the main component of opal and also occurs as small octahedral crystals.
- ‘All quartz is not the same - there are differences that do affect cristobalite generation - the ground quartz does produce more cristobalite.’
- ‘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.’
- ‘Atoms of aluminum and sodium in the structure may help the stability of cristobalite as well.’
Late 19th century: named after Cerro San Cristóbal in Mexico, where it was discovered, + -ite.
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