Assertion: massive siderite | /r/HasProperty | widespread
Facets:
value: in sedimentary rocks
type: LOCATION
value: in clays
type: LOCATION
value: in shales
type: LOCATION
Source sentences:
text: The book goes on to say that massive siderite is widespread in sedimentary rocks.
text: Massive siderite is widespread in sedimentary rocks, particularly in clays and shales where it forms clay ironstones which are usually concretionary in origin.