Noun
a white mineral consisting of silica; found in volcanic rocks
Source: WordNetIn some stones, the inclusion of small, white, radially clustered crystals of cristobalite in the black glass produce a blotchy or snowflake pattern (snowflake obsidian). Source: Internet
Soapstone undergoes transformations when heated to temperatures of 1000–1200 °C into enstatite and cristobalite ; in the Mohs scale, this corresponds to an increase in hardness to 5.5–6.5. Source: Internet
The structures of tridymite and cristobalite are closely related and can be described as hexagonal and cubic close-packed layers. Source: Internet
The high temperature minerals, cristobalite and tridymite, have both a lower density and index of refraction than quartz. Source: Internet