Mineralogic Composition:
 Physical and mechanical characteristics:
   
Apparent specific gravity 2,66 gr/cm
Absorption coefficient 0,25%
Mechanical resistence to compression 1.381 kg/cm
Mechanical resistence to flesion 102 kg/cm
Resistance to erosion 1,6 mm
Resistance to blows 50 cm
Frost resistance 0,02%
Alteration for thermic blast No change