definisi
shonkinite punika, rock igneous langka peteng-colored lan intrusive kang ngandhut augite lan Feldspar orthoclase minangka konstituen dhasar sawijining
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
Etimologi
saka jeneng shonkin sag kisaran ing gunung Highwood-lor tengah montana, kita
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
group
ora ditrapake
vulkanik
kategori liyane
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock opaque