Assertion: calcite | /r/PartOf | limestone
Facets:
Source sentences:
text: Onyx is made of calcite, which is the same mineral that makes up limestone, marble, and travertine.
text: As tectonic processes form mountains extreme pressures and heat on limestone bedrock re-crystallizes the carbonate minerals such as calcite that makes up the limestone, turning the sedimentary rock into metamorphic rock called marble.