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
enderbite rock iku sawijining rock igneous kang belongs menyang seri rock charnockite
1.2 Sajarah
1.2.1 asal
Ethiopia
tanah Enderby, Antartika
1.2.2 panemu
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka kedadeyan ing tanah Enderby, Antartika
1.4 kelas
1.4.1 sub-kelas
awet rock, medium atose rock
awet rock, hard rock
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
rock opaque
rock grained coarse, rock opaque