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
Schist punika bahan metamorphic rock medium karo medium kanggo gedhe, warata, sheet kaya pari-parian ing orientasi preferred
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka schiste french, skhistos greek IE pamisah
kelas
batuan beku
rocks metamorphic
sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
group
vulkanik
ora ditrapake
kategori liyane
rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque