Assertion: cryolite | /r/HasAspect | a mohs hardness of 2.5 to 3
Facets:
Source sentences:
text: It has a Mohs hardness of 2.5 to 3 and a specific gravity of about 2.95 to 3.0.
text: It has a Mohs hardness of 2.5 to 3 and a specific gravity of about 2.95 to 3.0.