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
granulite nggoleki kanggo medium grained metamorphic rock karo granular kristal polygonal.
saka granulum latin, a gandum sethithik utawa grained nggoleki
rock grained coarse, medium rock grained, rock opaque