definisi
asal
panemu
Etimologi
kelas
sub-kelas
group
kategori liyane
coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
gritstone utawa grit punika hard, coarse-grained, siliceous sandstone
rock grained coarse, rock opaque