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
luxullianite jinis langka granit, dikenal kanggo ngarsane kelompok-kelompok saka radially disusun kristal Tourmaline acicular kang diubengi déning phenocrysts saka orthoclase lan quartz ing matrik saka kuarsa, Tourmaline, Feldspar alkali, mica coklat.
Sajarah
asal
Ethiopia
england
panemu
obsius
Ora dingerteni
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka desa luxulyan di, england, ngendi iki macem-macem granit ditemokake
kelas
batuan beku
batuan beku
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kulawarga
group
vulkanik
plutonic
kategori liyane
rock opaque
rock grained coarse, rock opaque