definisi
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Etimologi
kelas
sub-kelas
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kategori liyane
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
vogesite punika igneous alkalin porphyritic rock lan macem-macem lamprophyre kang didominasi dening amphibole penting, biasane hornblende, lan Feldspar potassic
saka macem-macem lamprophyre greek lampros padhang lan kang madhangi + porphureos kain
awet rock, medium atose rock
rock grained coarse, rock grained nggoleki, rock opaque