1 Definition
1.1 definisi
comendite punika hard, peralkaline igneous rock, jinis cahya rhyolite werna abu-abu biru
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
1.2.2 panemu
1.3 Etimologi
comendite asalé jeneng saka wilayah saka le commende ing San Pietro pulo ing Italia
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
1.4 kelas
1.4.1 sub-kelas
awet rock, hard rock
awet rock, medium atose rock
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
medium rock grained, rock opaque
rock opaque