Assertion: calcite's crystal | /r/CapableOf | occur as secondary mineral
Facets:
value: oxyhydroxides as goethite
type: OTHER
value: along with other iron oxides
type: OTHER
Source sentences:
text: Clay-sized hematite crystals can also occur as a secondary mineral formed by weathering processes in soil, and along with other iron oxides or oxyhydroxides such as goethite, is responsible for the red color of many tropical, ancient, or otherwise highly weathered soils.