Obsidian lan Vogesite 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
vogesite punika igneous alkalin porphyritic rock lan macem-macem lamprophyre kang didominasi dening amphibole penting, biasane hornblende, lan Feldspar potassic
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka macem-macem lamprophyre greek lampros padhang lan kang madhangi + porphureos kain
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