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
breccia punika rock dumadi saka pecahan sudut saka watu kang cemented dening materi calcareous becik
Sajarah
asal
Ethiopia
england
panemu
obsius
Ora dingerteni
Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka italian, secara harfiah kerikil, asal Jerman lan related kanggo break
kelas
batuan beku
rocks sedimentary
sub-kelas
awet rock, medium atose rock
awet rock, hard rock
kulawarga
group
vulkanik
-
kategori liyane
rock opaque
rock grained coarse, medium rock grained, rock opaque