English

Noun

cristobalite ‎(countable and uncountable, plural cristobalites)

1. (mineralogy) A mineral of volcanic rocks that solidified at a high temperature. Cristobalite is chemically identical to quartz, with the chemical formula SiO₂, but has a different crystal structure. Crystals are always microscopic, and usually form small rounded masses.

Translations

See also

• Wikipedia article on Silicon dioxide minerals
• silicate, silica group