Assertion: anthracite | /r/HasProperty | hard coal
Facets:
value: usually
type: DEGREE
value: very
type: DEGREE
value: often
type: TEMPORAL
value: with a jet-black colour
type: OTHER
Source sentences:
text: Since it's discovery in Eastern Pennsylvania in 1769, Anthracite (hard coal) has been providing clean affordable heat for homes and is an economic and environmentally friendly fuel source.
text: Anthracite, commonly known as hard coal, has been commercially mined and prepared in the Northeast Region of Pennsylvania for more than 150 years.
text: Anthracite Coal is more normally known as “hard coal”.
text: Often referred to as hard coal, anthracite is hard, black and lustrous.
text: It is very hard and compact.
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, a harder coal, burns slow and hot, releasing little smoke.
text: Anthracite coal is a dense, clean to touch, and hard rock with a jet-black colour.
text: Often referred to as hard coal, anthracite is hard, black and lustrous.
text: Anthracite is hard coal.
text: Since its discovery in Eastern Pennsylvania in 1769, Anthracite (hard coal) has been providing clean, affordable heat for homes, schools, and institutions.
text: There are two types of coal found in Pennsylvania: anthracite (the “hard coal” found in Northeastern Pennsylvania below the Allegheny Ridge southwest to Harrisburg; also called “stone coal”, “rock coal” in the 1800s) and bituminous (“soft coal”, found west of the Allegheny Front escarpment).
text: Anthracite is harder than other coal types; therefore, it is known as hard coal.
text: Anthracite is known as “hard coal” because compared to the more common bituminous or “soft coal,” anthracite is stonelike and lustrous.
text: Anthracite, the fourth stage in coal formation, is also known as “hard coal” because it is hard and has a high lustre.
text: Anthracite coal is also known as hard coal.
text: Usually known as “hard coal,” anthracite coal is a form of clean-burning coal that is highly carbonated and contains low amounts of sulfur.
text: Anthracite coal is also known as hard coal.
text: Anthracite is hard, having been exposed to more heat and pressure over time.
text: The anthracite I am currently holding is hard, very hard, and not a bit dusty.
text: Anthracite coal is very hard and shiny.
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.