Assertion: marble | /r/HasProperty | yellow
Facets:
value: usually
type: DEGREE
value: because of the presence of iron oxide
type: CAUSE
Source sentences:
text: These marbles are usually brown or yellow because of the presence of iron oxide.
text: Marble that contains impurities such as clay minerals, iron oxides, or bituminous material can be bluish, gray, pink, yellow, or black in color.
text: Most marble is pale gray, pink, brown, green, yellow, or blue.
text: Marble that contains impurities such as clay minerals, iron oxides, or bituminous material can be bluish, gray, pink, yellow, or black in color.
text: Marble that has limonite is yellow, and marble with serpentine is green.
text: Marble that contains impurities such as clay minerals, iron oxides, or bituminous material can be bluish, gray, pink, yellow, or black in color.