definisi
asal
panemu
Etimologi
kelas
sub-kelas
group
kategori liyane
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
Alexandre brongniart Rene Hauy
saka trakhus greek atos 'utawa roughness trakhutēs
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