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
pyrolite iku sawijining rock igneous dumadi saka watara telung bagean peridotite lan siji bagéan saka basalt
1.2 Sajarah
1.2.1 asal
Ethiopia
pike county, kita
1.2.2 panemu
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka komposisi kimia lan mineral saka lapisan ndhuwur bumi
1.4 kelas
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 opaque