Assertion: pyrite | /r/CapableOf | occur as octahedron
Facets:
value: often
type: TEMPORAL
value: with lines
type: OTHER
Source sentences:
text: Pyrite is harder than glass or most metals, is very brittle and often occurs as cubes or octahedrons with faint striations or lines on some crystal faces.
text: Pyrite often occurs as cubes or octahedrons, while marcasite typically exhibits a radiating fibrous texture.