Assertion: basalt's feldspar | /r/HasProperty | reduced to clay minerals
Facets:
value: in most sedimentary rocks
type: LOCATION
value: like kaolinite
type: OTHER
value: like illite
type: OTHER
value: like smectite.[clarification
type: OTHER
Source sentences:
text: In most sedimentary rocks, mica, feldspar and less stable minerals have been reduced to clay minerals like kaolinite, illite or smectite.[clarification needed]