b-cristobalit Mineral Data, minerology database

Mineral Reference Lookup for b-cristobalit

This reference page contains mineralogic data for b-cristobalit and folklore and metaphysical beliefs. If the mineral is an alternate naming of a more common name, the more common mineral's data is displayed below the list of synonyms.

Minerals matching b-cristobalit in the database: b-Cristobalit b-Cristobalita b-Cristobalite

Mineralogical Reference

b-cristobalit

Mineral	b-Cristobalit
Synonym	Cristobalite

Cristobalite (synonym)

Mineral	CRISTOBALITE
Chemistry	SiO 2
Class	Silicate
Uses	As an indicator of high temperature crystallization and as mineral specimens.
Color	blue greybrown greyYellow or white
Luster	Vitreous
CrystalSystem	Tetragonal
Fracture	absent.
Hardness	6½
Streak	White
Characteristics	Refractive index is approximately 1.48
Occurences	include Cerro San Cristobal, Pachuca, Mexico (from where it gets its name); San Juan Mountains and Yellowstone National Park, both in Colorado and Mt. Lassen, California, USA and Italy.
Indicators	crystal habit, environment of formation (mostly in the crevices of volcanic rocks), color and index of refraction.
DensityNote	below average for translucent minerals
IMAStatus	Approved
Discovered	1887
CellParameters	a = 4.97c = 6.91
Ratio	a:c = 1 : 1.39
TypeLocality	Cerro San Cristóbal Mun. de Pachuca Hidalgo Mexico
Strunz	4/D.01-30 4 : Oxides & Hydroxides D : Oxides with metal : oxygen = 1:2 (MO2 and related compounds) 01 : Quartz group