definisi
asal
panemu
Etimologi
kelas
sub-kelas
group
kategori liyane
ignimbrite punika rock vulkanik dumadi utamané saka pecahan pumice, kawangun dening consolidation saka materi setor dening mili pyroclastic
saka geni ignis latin + Imber, padusan imbr- udan, badai maya + -ite
awet rock, medium atose rock
rock grained nggoleki, rock opaque
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