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Obsidian
Obsidian

Greywacke
Greywacke



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Greywacke

Obsidian lan Greywacke 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
greywacke wis ditetepake minangka rock sandstone coarse-grained peteng kang ngandhut sen lempung luwih saka 15 saben
1.2 Sajarah
1.2.1 asal
Ethiopia
dingerteni
1.2.2 panemu
obsius
Dingertèni
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka grauwacke german, saka grau grey + wacke
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 nggoleki, rock opaque