1 Definition
1.1 definisi
basalt punika rock igneous extrusive umum kawangun dening cooling kanthi cepet saka lahar basaltic kapapar ing utawa banget cedhak ing lumahing bumi
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 pungkasan basaltes latin (varian saka basanites), watu banget hard, kang diimpor saka basanites greek kuna
saka obsidianus latin, misprint saka obsianus (lapis) (watu) saka obsius
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 grained nggoleki, rock opaque
rock opaque