is a coal called Anthikal
The layers of coal are called peat, lignite, subbituminous, bituminous caol, and anthracite. Peat being the most inexpensive and anthracite being the most valuable. Most coal in use is bituminous. Another answer: A layer of coal in a mine is called a coal seam.
Diamond.
it's valuable because we burn it in power plants for energy
Coal does not get refined. Oil gets refined, but coal gets used as it is when it comes out of the coal mine. There is a process called coal gassification by which natural gas can be made from coal, but that is not really a form of refining, and in any event, most coal is simply burned, it is not gassified.
anthracite coal
Anthracite is the highest carbon coal, and therefore the most valuable.
Black.
coal
water and coal
coal.
copper and coal
# WHAT IS THE MOST COMMON FORM OF COAL IN Pennsylvania?
Diamonds are more valuable than coal.
more valuable, most valuable
Of the fossil fuels (coal, oil and natural gas).
The layers of coal are called peat, lignite, subbituminous, bituminous caol, and anthracite. Peat being the most inexpensive and anthracite being the most valuable. Most coal in use is bituminous. Another answer: A layer of coal in a mine is called a coal seam.
coal is a valuble rock mined in Indiana