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