Assertion: ore's iron | /r/AtLocation | hematite
Facets:
value: most commonly
type: DEGREE
value: in the form of magnetite
type: OTHER
Source sentences:
text: Iron in ore iron is most commonly found in the form of magnetite (Fe 3 O 4 ), hematite (Fe 2 O 3 ), goethite (FeO(OH)), limonite (FeO(OH)·n(H 2 O)) or siderite (FeCO 3 ).