Obsidian lan Quartzite 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
Quartzite punika rock non-foliated metamorphic sing formulir dening metamorphism saka sandstone quartz murni
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka quartz + -ite
kelas
batuan beku
rocks metamorphic
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
group
vulkanik
ora ditrapake
kategori liyane
rock opaque
medium rock grained, rock opaque