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
comendite punika hard, peralkaline igneous rock, jinis cahya rhyolite werna abu-abu biru
Sajarah
asal
Ethiopia
italy
panemu
obsius
Ora dingerteni
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
comendite asalé jeneng saka wilayah saka le commende ing San Pietro pulo ing Italia
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kulawarga
group
vulkanik
vulkanik
kategori liyane
rock opaque
medium rock grained, rock opaque