Assertion: chalcopyrite's hardness | /r/HasProperty | specific gravity
Facets:
Source sentences:
text: Perfect Mohs Hardness 1 Specific Gravity 2.7 to 2.8 Diagnostic Properties Feel, color, softness, cleavage Chemical Composition Mg 3 Si 4 O 10
text: Mohs Hardness 4 Specific Gravity 3.2 Diagnostic Properties Cleavage, hardness, specific gravity, color Chemical Composition CaF 2