Assertion: pyrite's iron | /r/CapableOf | come in original sedimentary rock
Facets:
value: from limonite
type: LOCATION
value: from pyrite
type: LOCATION
value: from hematite
type: LOCATION
Source sentences:
text: The alumina represents an admixture of clay; the silicates derive their silica from quartz and from clay; the iron came from limonite, hematite, or pyrite in the original sedimentary rock.