Properties of Obsidian lan Peridotite
ukuran gandum
ora ditrapake
coarse grained
rengat
conchoidal
ora duwe aturan baku
porosity
banget kurang keropos
kurang keropos
kateguhan
ora kasedhiya
2.1
tartamtu gravitasi
2.6-2.7
3-3.01
transparan
tembus
tembus kanggo opaque
Kapadhetan
2.6 g / cm 3
3.1-3.4 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, meksa tahan, nyandhang tahan