Assertion: flint | /r/HasProperty | found as chalk
Facets:
value: mainly
type: DEGREE
value: in sedimentary rocks
type: LOCATION
Source sentences:
text: It is found mainly as nodules and masses in sedimentary rocks, including limestones and chalks.
text: Flint itself is primarily found in chalk and limestone, although other Cherts have the same sparking properties.