Assertion: pyrite | /r/HasProperty | allowed
Facets:
Source sentences:
text: Iron pyrite was heaped up and allowed to weather (an example of an early form of heap leaching).
text: Iron pyrite was heaped up and allowed to weather (an example of an early form of heap leaching).
text: Iron pyrite was heaped up and allowed to weather as described above (an early form of heap leaching).