definisi
asal
panemu
Etimologi
kelas
sub-kelas
group
kategori liyane
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
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
awet rock, medium atose rock
foidolite jinis langka coarse-grained rock igneous intrusive karo isi Mineral feldspathoid luwih saka 60%
saka feldspathoid Mineral kang isi utama rock
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque