coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal 0
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13 0
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque 0