Assertion: graphite | /r/AtLocation | metamorphic rocks
Facets:
value: most often
type: DEGREE
value: naturally
type: MANNER
Source sentences:
text: Graphite occurs in metamorphic rocks as a result of the reduction of sedimentary carbon compounds during metamorphism.
text: Graphite is a mineral that naturally occurs in metamorphic rock in different continents of the world, including Asia, South America and some parts of North America.
text: Graphite most often occurs in metamorphic rocks formed from regional metamorphism or contact metamorphism of organic-rich sedimentary rocks, such as organic-rich marble, quartzite, schist, gneiss, and metamorphosed coal.