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
dolomite punika rock sedimentary ngemot luwih saka 50 persen saka dolomite Mineral dening bobot
1.2 Sajarah
1.2.1 asal
Ethiopia
Alps kidul, prancis
1.2.2 panemu
1.3 Etimologi
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
saka french, saka jeneng dolomieu (1750-1801), geologis french sing ditemokaké rock ing
1.4 kelas
batuan beku
rocks sedimentary
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 grained nggoleki, medium rock grained, rock opaque