Assertion: pyrrhotite | /r/HasProperty | exposed to oxygen
Facets:
value: naturally
type: MANNER
Source sentences:
text: When naturally exposed to water and oxygen, pyrrhotite breaks down to produce sulfuric acid and secondary minerals, including gypsum, which have larger volumes than the pyrrhotite they replace," the fact sheet notes.
text: When naturally exposed to water and oxygen, pyrrhotite breaks down to produce sulfuric acid and secondary minerals, including gypsum, which have larger volumes than the pyrrhotite they replace," the fact sheet notes.
text: When naturally exposed to water and oxygen, pyrrhotite breaks down to produce sulfuric acid and secondary minerals, including gypsum, which have larger volumes than the pyrrhotite they replace," the fact sheet notes.