Assertion: mineral | /r/HasProperty | found as hard octahedrons
Facets:
value: in contact metamorphic limestone deposits
type: LOCATION
value: in basic igneous rocks
type: LOCATION
value: in granite pegmatites
type: LOCATION
Source sentences:
text: These minerals are found as glassy, hard octahedrons, grains or masses in basic igneous rocks, granite pegmatites, and contact metamorphic limestone deposits.