Assertion: cryolite | /r/HasProperty | rare mineral
Facets:
Source sentences:
text: Cryolite is a rare mineral, however, found in commercial quantities only in Greenland.
text: Cryolite is another aluminium ore, but is rare and expensive, and most is now made chemically.
text: Cryolite, however, is a rare natural-occurring mineral that is used in the process of electrolysis of alumina to make metallic aluminum.
text: Cryolite is a rare mineral however found in commercial quantities only in Greenland.