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Trachyte
Trachyte

Obsidian
Obsidian



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Obsidian

Trachyte lan Obsidian Definition

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Definition

definisi

trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
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

Sajarah

asal

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Ethiopia

panemu

Alexandre brongniart Rene Hauy
obsius

Etimologi

saka trakhus greek atos 'utawa roughness trakhutēs
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius

kelas

batuan beku
batuan beku

sub-kelas

awet rock, medium atose rock
awet rock, medium atose rock

kulawarga

group

vulkanik
vulkanik

kategori liyane

rock grained nggoleki, rock opaque
rock opaque