Properties of Obsidian lan Harzburgite
ukuran gandum
ora ditrapake
coarse grained
rengat
conchoidal
ora duwe aturan baku
porosity
banget kurang keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
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