Anthracite lan Pumice Definition

Anthracite

Pumice

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1 Definition

1.1 definisi

Anthracite jinis rock sedimentary kang hard lan macem-macem batu bara sing wis luster dhuwur

pumice punika rock vulkanik sing kasusun saka Highly vesicular atos kaca vulkanik tekstur, kang bisa utawa ora bisa ngemot kristal

1.2 Sajarah

1.2.1 asal

pennsylvania, kita

spain

1.2.2 panemu

Dingertèni

1.3 Etimologi

saka anthrakites greek, saka anthrax, anthrak meaning coal

saka pomis french lawas, saka varian dialect latin saka pumex

1.4 kelas

rocks metamorphic

batuan beku

1.4.1 sub-kelas

awet rock, rock alus

awet rock, medium atose rock

1.5 kulawarga

1.5.1 group

ora ditrapake

vulkanik

1.6 kategori liyane

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

rock grained nggoleki, rock opaque

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