1 Definition
1.1 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
migmatite biasane rock granitic ing rock inang metamorphic kang dumadi saka loro komponen intermingled nanging pisah
1.2 Sajarah
1.2.1 asal
Ethiopia
Alps kidul, prancis
1.2.2 panemu
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka migma tembung yunani sing artine dicampur
1.4 kelas
batuan beku
rocks metamorphic
1.4.1 sub-kelas
awet rock, medium atose rock
awet rock, medium atose rock
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
rock opaque
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque