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Batubara
Batubara

Pumice
Pumice



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Pumice

Batubara lan Pumice Definition

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Definition

definisi

coal iku combustible-ireng coklat ireng utawa sedimentary rock biasane kedadean ing parang tingkat ing lapisan sing disebut kasur coal
pumice punika rock vulkanik sing kasusun saka Highly vesicular atos kaca vulkanik tekstur, kang bisa utawa ora bisa ngemot kristal

Sajarah

asal

usa
spain

panemu

john peter Salley
Ora dingerteni

Etimologi

saka col term english lawas, kang wis temenan Mineral karbon fosil wiwit abad kaping 13
saka pomis french lawas, saka varian dialect latin saka pumex

kelas

rocks sedimentary
batuan beku

sub-kelas

awet rock, rock alus
awet rock, medium atose rock

kulawarga

group

-
vulkanik

kategori liyane

rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained nggoleki, rock opaque