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Obsidian
Obsidian

Anthracite
Anthracite



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Anthracite

Obsidian lan Anthracite Definition

1 Definition
1.1 definisi
obsidian punika kaca vulkanik alami kawangun minangka rock igneous extrusive. diprodhuksi nalika lahar felsic extruded saka gunung mbledhos ndingin kanthi cepet karo wutah kristal minimal
Anthracite jinis rock sedimentary kang hard lan macem-macem batu bara sing wis luster dhuwur
1.2 Sajarah
1.2.1 asal
Ethiopia
pennsylvania, kita
1.2.2 panemu
obsius
Dingertèni
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
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 opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque