Obsidian lan Foidolite 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
foidolite jinis langka coarse-grained rock igneous intrusive karo isi Mineral feldspathoid luwih saka 60%
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka feldspathoid Mineral kang isi utama rock
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, rock alus
kategori liyane
rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque