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
rhyodacite iku sawijining rock vulkanik extrusive penengah ing komposisi antarane dacite lan rhyolite
Sajarah
asal
Ethiopia
usa
panemu
obsius
Ora dingerteni
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
rhyo lite + dacite: a rock antarané rhyolite lan dacite sing extrusive padha karo granodiorite
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
kulawarga
group
vulkanik
vulkanik
kategori liyane
rock opaque
rock grained nggoleki, rock opaque