Obsidian lan Trachyte Definition
definisi
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
trachyte punika rock vulkanik nggoleki-grained werna abu-abu kang utamané dumadi saka Feldspar alkali
panemu
obsius
Alexandre brongniart Rene Hauy
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka trakhus greek atos 'utawa roughness trakhutēs
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
kategori liyane
rock opaque
rock grained nggoleki, rock opaque