Assertion: cristobalite | /r/HasProperty | reported
Facets:
Source sentences:
text: However, it has been reported that presence of quartz crystals can significantly lower the phase transition temperature of cristobalite formation .
text: But, it has been reported that in the presence of alkali and alkaline earth content the cristobalite phase is formed even at low temperatures i.e. ~1000 °C19.