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
laterit rock jinis rock sedimentary kang sugih ing wesi lan aluminium, kawangun ing wilayah tropis panas lan udan
1.2 Sajarah
1.2.1 asal
1.2.2 panemu
obsius
francis Buchanan-Hamilton
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka latin mengko bata, kothak + -ite1
1.4 kelas
batuan beku
rocks sedimentary
1.4.1 sub-kelas
awet rock, medium atose rock
awet rock, rock alus
1.5 kulawarga
1.5.1 group
1.6 kategori liyane
rock opaque
rock grained nggoleki, rock opaque