Typical analysis:      Physical Properties

  Fe2O3                        0.001%                                 

  CaO                            2.34%     

  K2O                            0.239%     

  SiO2                         66.7%     

  Al2O3                         9.155%    

  MgO                            9.475%     

  MnO                            0.118%      

  Na2O                          0.016%    

   P2O5                          0.001%     

   pH                              6.8 - 7.8%

L.0.I. 7.0%

Colour - grey

Crystal structure - chain

Particle shape - needle

Particle size - < 310 micron

Loose bulk density – Approx. 706g/cm

Westing house absorption - 106% (water)

Ford absorption - 82% (oil)

Free moisture < 10%