1 Definition
1.1 definisi
pantellerite punika rhyolite peralkaline. wis wesi luwih lan komposisi aluminium ngisor saka comendite
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
1.2 Sajarah
1.2.1 asal
Selat saka sisilia
Ethiopia
1.2.2 panemu
1.3 Etimologi
saka Pantelleria, pulo vulkanik ing selat saka sisilia
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
1.4 kelas
1.4.1 sub-kelas
awet rock, hard rock
awet rock, medium atose rock
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
rock grained nggoleki, rock opaque
rock opaque