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
rhyolite punika rock igneous nggoleki-grained kang sugih ing silika
Sajarah
asal
Ethiopia
lor amerika
panemu
obsius
Ferdinand von Richthofen
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka rhyolit german, saka stream lahar greek rhuax + watu lithos
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kulawarga
group
vulkanik
vulkanik
kategori liyane
rock opaque
rock grained coarse, rock opaque