Assertion: talc | /r/CapableOf | lose its hydroxyl groups
Facets:
value: progressively
type: MANNER
value: above 900° c
type: LOCATION
Source sentences:
text: Above 900° C, talc progressively loses its hydroxyl groups and above 1050°C, it re-crystallises into different forms of enstatite (anhydrous magnesium silicate).