Assertion: cristobalite | /r/HasProperty | persistent
Facets:
value: qualitatively
type: DEGREE
value: very
type: DEGREE
Source sentences:
text: Quartz and cristobalite were qualitatively found to be very persistent because they are extremely resistant to chemical weathering.
text: Quartz and cristobalite are persistent and under continuous exposure conditions may physically accumulate in the lung tissues of terrestrial organisms.