NASA's Spitzer Space Telescope detected quartz-like crystals called cristobalite in young planetary systems.    From Wordnik.com.  [News and Features - NASA's Jet Propulsion Laboratory] Reference

The crystals, called cristobalite and tridymite, are known to reside in comets, in volcanic lava flows on Earth, and in some meteorites that land on Earth.    From Wordnik.com.  [News and Features - NASA's Jet Propulsion Laboratory] Reference

The exposures to cristobalite sometimes reached the.    From Wordnik.com.  [Volcanic Ash -- Effects on Health and Mitigation Strategies] Reference

D shows a body that does not contain any cristobalite.    From Wordnik.com.  [11. Glaze problems] Reference

E shows contraction of a body containing cristobalite.    From Wordnik.com.  [11. Glaze problems] Reference

Higher glaze firing temperature (to increase cristobalite).    From Wordnik.com.  [11. Glaze problems] Reference

The graph in fig. 58-2 shows contraction of a glazed body containing cristobalite.    From Wordnik.com.  [Chapter 9] Reference

The exposures to cristobalite sometimes reached the 0.05 mg/m3 averaged over an 8-hour workday.    From Wordnik.com.  [Volcanic Ash -- Effects on Health and Mitigation Strategies] Reference

The silica is released in the form of cristobalite crystals which may cause dunting on fast cooling (see page 53).    From Wordnik.com.  [Chapter 8] Reference

Free silica in the form of cristobalite expands nearly 3% when heated to 226°C and contracts again when cooled to the same temperature.    From Wordnik.com.  [Chapter 9] Reference

These other forms of silica include opal, chalcedony, flint and chert (non-crystalline), and cristobalite, tridymite, coesite, and stichovite.    From Wordnik.com.  [Quartz] Reference

But they were surprised to find cristobalite and tridymite.    From Wordnik.com.  [News and Features - NASA's Jet Propulsion Laboratory] Reference

Deformation mechanisms leading to auxetic behaviour in the alpha-cristobalite and ….    From Wordnik.com.  [iMechanica - Comments] Reference

It is this high-temperature form of silica crystals, specifically cristobalite and tridymite, that Forrest's team found in planet-forming disks around other stars for the first time.    From Wordnik.com.  [News and Features - NASA's Jet Propulsion Laboratory] Reference

It is these high-temperature forms of silica crystals, specifically cristobalite and tridymite, that Forrest's team found in planet-forming disks around other stars for the first time.    From Wordnik.com.  [SPACE.com] Reference

226° C. when the glaze is hard, the cristobalite in the body contracts 3%, leaving the glaze in compression.    From Wordnik.com.  [Chapter 9] Reference

220°C the cristobalite change causes the body to contract, and at this temperature the glaze is hard so it is left under compression.    From Wordnik.com.  [11. Glaze problems] Reference

cristobalite-like CO2 as found in silicon dioxide, is predicted to be formed from CO2-III via an intermediate structure at 80 GPa and temperature lower than room temperature.    From Wordnik.com.  [innovations-report] Reference

On cooling, cristobalite shrinks again.    From Wordnik.com.  [Chapter 8] Reference

Too little cristobalite formation in the body.    From Wordnik.com.  [11. Glaze problems] Reference