Color: gray-white
State at 25°C: solid
Density (g/cm3): 7.43
Hardness (Mohs): 5
Melting Point (K): 1517.2
Boiling Point (K): 2333
Heat of Fusion (kJ/mol): 14.4
Heat of Vaporization (kJ/mol): 220
Heat of Atomization (kJ/mol): 281
Therm. Conductivity (J/m sec K): 7.81
Elec. Conductivity (1/mohm cm): 5.405
Abundance, Solar System: 3.980
Abundance, Earth's Crust: 3
Pure Cost ($/100g): $ 1.70
Bulk Cost ($/100g):  
Source: Pyrolusite, psilomelane (oxide)