Batubara lan Slate Definition
definisi
coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
slate punika, kabeh podho rock metamorphic nggoleki-grained, foliated asalé saka krikel-jinis sedimentary rock asli dumadi saka lempung utawa awu vulkanik liwat kurang-bahan metamorphism regional
panemu
john peter Salley
Abraham Gottlob Werner
Etimologi
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
saka lawas esclate french, saka esclat (french éclat)
kelas
rocks sedimentary
rocks metamorphic
sub-kelas
awet rock, rock alus
awet rock, medium atose rock
kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained nggoleki, rock opaque