jinis
peat, lignite, sub-bituminous batu bara, bituminous batu bara, Anthracite, grafit
schists mica, schists calc-silicate, schists grafit, blueschists, whiteschists, greenschists, hornblende Schist, talc Schist, chlorite Schist, garnet Schist, Schist glaucophane.
fitur
mbantu ing produksi panas lan listrik, digunakake minangka bahan bakar fosil
gampang pecah dadi lancip piring, Gamelan kanggo tutul