1 Definition
1.1 definisi
granit punika banget hard, granular, rock kristal beku kang kasusun utamané saka kuarsa, mica, lan Feldspar lan asring digunakake minangka bangunan watu
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
1.2.2 panemu
1.3 Etimologi
saka granito italian, kang tegese rock grained, saka gandum grano, lan saka granum latin
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 coarse, rock opaque
rock opaque