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ANTHRACITE!
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What is the hardest and oldest type of coal?
Anthracite is the hardest type of coal.
What is the hardest and oldest type coal?
Anthracite is the hardest type of coal.
What is the hardest and oldest coal?
Anthracite
What is the name of the hardest coal?
Anthracite
Which of these is the hardest and oldest type of coal?
anthracite
What is the hardest and oldest of coal?
Anthracite is the hardest type of coal.
What is the hardest and oldest type of coal?
Anthracite is the hardest type of coal.
What is the hardest and oldest type coal?
Anthracite is the hardest type of coal.
What is the deff of anthracite?
Anthracite is metamorphosed bituminous coal, a coal with the highest percentage of carbon of the coal varieties.
What is the hardest and oldest coal?
Anthracite
What is the name of the hardest coal?
Anthracite
Which of these is the hardest and oldest type of coal?
anthracite
The first stage in the information of coal is?
Rotting vegetation is overlaid by more rotting vegetation or other material. This is compressed by the mass above and form peat. Compression of the peat continues and form lignite (brown coal) Compression continues on the lignite to form coal (clack shiny rock) Compression may continue to form anthracite , the hardest form of coal . NB with each compression watert/moisture is expelled, so coal and anthracite are very dry.
What is the youngest and softest coal?
Lignite is the youngest and softest coal; bituminous is mid-grade coal, and anthracite is the hardest and hottest burning coal. Even brown coal.
What type of coal probably formed from the greatest pressure?
Anthracite, the hardest coal, forms from the greatest pressure.
Which is the hardest form of carbon?
Diamond is an allotrope of Carbon and is the hardest known form of Carbon.
What is the most common form of coal in Pennsylvania?
# WHAT IS THE MOST COMMON FORM OF COAL IN Pennsylvania?
