Assertion: talc's cleavage | /r/HasProperty | perfect
Facets:
Source sentences:
text: Talc has perfect cleavage that follows planes between the weakly bonded sheets.
text: Talc has perfect cleavage in one direction.
text: Talc has perfect cleavage in one direction.
text: Talc is a mineral that has perfect cleavage and a greasy or soapy feel.