cristobalite


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

cristobalite

[kri′stō·bə‚līt]
(mineralogy)
SiO2 A silicate mineral that is a high-temperature form of quartz; stable above 1470°C; crystallizes in the tetragonal system at low temperatures and the isometric system at high temperatures.
References in periodicals archive ?
The chart also shows that both cristobalite inversion and quartz inversion are absent from the clay body curve.
Sand additives that reduce veining defects provide liquid on the surface of the sand grain and favor formation of tridymite or cristobalite and greater expansion of the sand.
In another area sample, the cristobalite concentrations were nine times the acceptable amount.
A peak at higher temperatures, which corresponds to the cristobalite transition in silica sand, also denotes the sintering temperature of the sample, when sand grains partially melt and start fusing to each other.
Precision classified Minbloc[R] grades produced from microcrystalline silica, cristobalite, or nepheline syenite are available for clarity and high-clarity blown and cast flexible packaging and agricultural film applications.
Department of the Interior 2003], of which quartz, cristobalite, and tridymite are the most common.
Effect of Nanosized TiO2 on Nucleation and Growth of Cristobalite in Sintered Fused Silica Cores for Investment Casting Giuseppe Casarano, Antonio Licciulli, Antonio Chiechi, Daniela Diso, Danilo Bardaro, Pasquale Bene, Michele Di Foggia
The white cristobalite zone measures more than 1 in.
The lab, accredited by AIHA, provides TCLP testing and routine analysis for quartz, cristobalite, heavy metals and organics.
Further, lower-temperature operation avoids the unwanted silica phase change from quartz to cristobalite.