Pumice lan Anthracite Definition

Pumice

Anthracite

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1 Definition

1.1 definisi

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

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

1.2 Sajarah

1.2.1 asal

spain

pennsylvania, kita

1.2.2 panemu

Dingertèni

1.3 Etimologi

saka pomis french lawas, saka varian dialect latin saka pumex

saka anthrakites greek, saka anthrax, anthrak meaning coal

1.4 kelas

batuan beku

rocks metamorphic

1.4.1 sub-kelas

awet rock, medium atose rock

awet rock, rock alus

1.5 kulawarga

1.5.1 group

vulkanik

ora ditrapake

1.6 kategori liyane

rock grained nggoleki, rock opaque

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

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