Assertion: quartz | /r/AtLocation | two forms
Facets:
Source sentences:
text: Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral.
text: Quartz exists in two forms: (1) alpha-, or low, quartz, which is stable up to 573 °C (1,063 °F), and (2) beta-, or high, quartz, stable above 573 °C.