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
picrite iku macem-macem dhuwur-Magnesium basalt olivine sing sugih banget ing olivine Mineral
saka pikros greek pait + -ite, abad ka-19
rock grained nggoleki, rock opaque