definisi
coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
banget nggoleki rock fault grained kang dumadi saka matrik glassy sing asring ngandhut inclusions pecahan wall-rock.
Sajarah
asal
usa
usa
panemu
john peter Salley
Ora dingerteni
Etimologi
saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
saka pseudo- + tachylite, a rock glassy déning panas frictional ing bentet.
kelas
rocks sedimentary
rocks metamorphic
sub-kelas
awet rock, rock alus
awet rock, hard rock
kulawarga
group
-
-
kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained nggoleki, rock opaque