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Basalt

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INTRODUCTION TO BASALT

Basalt is a dark gray to black, medium grained dense volcanic rock, thus mineral, and 100% inorganic. The typical diameter of the basalt fiber lies between 9 and 13 microns, which guarantees the best possible compromise between stability and durability.

 

Basalt consists of the following:

  • 50 - 58 % SiO
  • 14 - 18 % Al2O
  • 5 - 10 % CaO
  • 4 - 9 % MgO
  • 5 - 10 % Fe2O 
  • 2 - 5 % Na2O
  • 0.8 - 3 % K2O
  • 5 - 10 % Fe2O
  • up to 2% other minerals

 

 
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