Assertion: anthracite | /r/HasProperty | black
Facets:
value: with a grayish shade
type: OTHER
value: with an occasional spotty iridescence
type: OTHER
value: as —
type: DEGREE
Source sentences:
text: Anthracite is black, often with a grayish shade, with an occasional spotty iridescence.
text: Thus first lignite (also called "brown coal"), then sub-bituminous coal, bituminous coal, and lastly anthracite (also called "hard coal" or "black coal") may be formed.
text: Anthracite coal is as black as—
text: Anthracite, formed under the pressure of mountain building, is the blackest coal, and the hardest.
text: Anthracite is black, often with a grayish shade, with an occasional spotty iridescence.
text: Often referred to as hard coal, anthracite is hard, black and lustrous.
text: Thus first lignite (also called "brown coal"), then sub-bituminous coal, bituminous coal, and lastly anthracite (also called "hard coal" or "black coal") may be formed.