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
carbonatite iku intrusive utawa extrusive rock igneous kang ditetepake dening komposisi mineralogic, dumadi saka mineral karbonat luwih saka 50 persen
Sajarah
asal
Ethiopia
Tanzania
panemu
obsius
Ora dingerteni
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka rock igneous intrusive, gadhah mayoritas mineral karbonat
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, rock alus
kulawarga
group
vulkanik
plutonic
kategori liyane
rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque