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Obsidian
Obsidian

Trachyte
Trachyte



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Trachyte

Obsidian lan Trachyte Definition

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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
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
1.2 Sajarah
1.2.1 asal
Ethiopia
dingerteni
1.2.2 panemu
obsius
Alexandre brongniart Rene Hauy
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka trakhus greek atos 'utawa roughness trakhutēs
1.4 kelas
batuan beku
batuan beku
1.4.1 sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
1.5 kulawarga
1.5.1 group
vulkanik
vulkanik
1.6 kategori liyane
rock opaque
rock grained nggoleki, rock opaque