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
teschenite punika coarse- kanggo nggoleki-grained, peteng-colored rock intrusive igneous sing biasane ana ing sills, dikes lan masal ora duwe aturan baku lan tansah ngrubah kanggo sawetara ombone
1.2 Sajarah
1.2.1 asal
1.2.2 panemu
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka kedadeyan sawijining near teschen. saiki dikenal minangka cieszyn, POL., Scotland
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