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
adamellite punika porphyritic rock igneous coarse-grained, macem-macem monzogranite lan didominasi dening phenocrysts saka orthoclase ing groundmass granular saka perthite, plagioclase lan quartz
Sajarah
asal
Ethiopia
italy
panemu
obsius
Ora dingerteni
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka adamellit german lan saka monte adamello, gunung ing Italia, lokalitas sawijining
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