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
tephrite iku sawijining aphanitic kanggo porphyritic tekstur, vulkanik rock igneous
Sajarah
asal
Ethiopia
germany
panemu
obsius
van tooren
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka tephra greek, awu saka basa indo-european, kanggo ngobong
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kulawarga
group
vulkanik
vulkanik
kategori liyane
rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque