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
pegmatite rock punika holocrystalline, rock igneous intrusive kang dumadi saka interlocking kristal phaneritic
Sajarah
asal
Ethiopia
-
panemu
obsius
rj Hauy
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka pegma greek, pegmat kang bab liya- katunggilaké + -ite
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kulawarga
group
vulkanik
plutonic
kategori liyane
rock opaque
rock grained coarse, rock opaque