Assertion: graphite | /r/HasProperty | natural
Facets:
Source sentences:
text: Although much graphite is natural and mined, there are processes for the manufacture of graphite from carbon containing compounds.
text: Graphite is a natural form of carbon characterized by its hexagonal crystalline structure.
text: In production of paints, the powdered form of lump graphite is used, and since graphite is a natural water-repellent, it is the best choice for giving a protective coating on wood.
text: Graphite is one of the natural minerals which is chemically composed of only carbon atoms.