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Obsidian
Obsidian

Ganister
Ganister



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Ganister

Obsidian lan Ganister 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
ganister punika hard, nggoleki-grained sandstone quartzose utawa orthoquartzite kang Sejatine digunakake ing Pabrik silika bata biasane digunakake kanggo geni baris lan jinis rocks sedimentary.
1.2 Sajarah
1.2.1 asal
Ethiopia
england
1.2.2 panemu
obsius
Dingertèni
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka gan'is-ter IE hard, watu siliceous close-grained, asring mbentuk stratum kang underlies a coal-lapisan
1.4 kelas
batuan beku
rocks sedimentary
1.4.1 sub-kelas
awet rock, medium atose rock
awet rock, hard rock
1.5 kulawarga
1.5.1 group
vulkanik
ora ditrapake
1.6 kategori liyane
rock opaque
rock grained coarse, rock grained nggoleki, rock opaque