Obsidian lan Minette 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
Minette iku macem-macem lamprophyre lan porphyritic rock igneous alkalin kang utamané didominasi dening biotite lan Feldspar potassic
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka french ore mine, mine + ette
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
kategori liyane
rock opaque
rock grained coarse, rock grained nggoleki, rock opaque