Assertion: β quartz | /r/HasProperty | stable
Facets:
value: at temperatures
type: TEMPORAL
value: beyond 573°c
type: OTHER
Source sentences:
text: The "low" refers to the fact that this is the stable silica polymorph at low temperatures as opposed to the very similar β-quartz that is stable only beyond 573°C.
text: Because β-quartz is only stable at temperatures that are well beyond that of hydrothermal watery solutions, it is typically formed in cooling igneous silica rich magmas.