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
gabbro iku sawijining igneous rock intrusive kang kimia padha karo kanggo basalt plutonic
Sajarah
asal
Ethiopia
germany
panemu
obsius
christian Leopold von Buch
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka latin glaber gundhul, Gamelan, gundul
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