Assertion: fluorine | /r/HasProperty | produced
Facets:
value: from the calcium fluoride mineral fluorite
type: OTHER
value: directly
type: MANNER
Source sentences:
text: orge Gore seems to be the first scientist to isolate fluorine, but his experiment exploded when the fluorine that was produced reacted with hydrogen.
text: Fluorine is produced directly from the calcium fluoride mineral fluorite, sometimes also known as fluorspar.