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
1.2 Sajarah
1.2.1 asal
Ethiopia
1.2.2 panemu
obsius
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
1.4 kelas
batuan beku
1.4.1 sub-kelas
awet rock, medium atose rock
1.5 kulawarga
1.5.1 group
vulkanik
1.6 kategori liyane
rock opaque