Definitions

from The Century Dictionary.

  • noun A form of silica found in small octahedral crystals in cavities in the andesite of the Cerro San Cristobal, Mexico. It may be pseudomorphous.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun 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.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a white mineral consisting of silica; found in volcanic rocks

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Named for the type locality at Cerro San Cristóbal, Mexico.

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