Assertion: potassium nitrate | /r/CapableOf | form within cave
Facets:
value: as white mineral fibers
type: MANNER
value: as crusts
type: MANNER
value: as crystals
type: MANNER
Source sentences:
text: Potassium nitrate, although forming within caves as white mineral fibers, crusts and crystals, can have impurities in its natural state (marked by colors in the crystal such as red, brown, yellow or gray).