Batubara lan Soapstone Definition
definisi
coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
iku Magnesium sugih rock metamorphic amarga dumadi saka talc Mineral
panemu
john peter Salley
Dingertèni
Etimologi
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
saka abad ka-17, amarga saka aran greasy lan nggunakake kaya sinetron sing
kelas
rocks sedimentary
rocks metamorphic
sub-kelas
awet rock, rock alus
awet rock, rock alus
group
ora ditrapake
ora ditrapake
kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained nggoleki, rock opaque