1 Definition
1.1 definisi
coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
1.2 Sajarah
1.2.1 asal
usa
1.2.2 panemu
john peter Salley
1.3 Etimologi
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
1.4 kelas
rocks sedimentary
1.4.1 sub-kelas
awet rock, rock alus
1.5 kulawarga
1.5.1 group
ora ditrapake
1.6 kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque