Assertion: mineral's cleavage | /r/HasProperty | chemical composition k(mg
Facets:
value: fe
type: OTHER
Source sentences:
text: Cleavage Basal, perfect Mohs Hardness 2.5 to 3 Specific Gravity 2.7 to 3.4 Diagnostic Properties Dark color, perfect cleavage Chemical Composition K(Mg,Fe) 3 (AlSi 3 O 10 )(F,OH)