Properties Muscovite
Chemical Formula           KalAlSiO(OH)
Colour             Ruby and Pale green
Specific gravity     2.7 – 3.0
Hardness          Mohs 2.8 -3.2
Specific heat       0.206-0.209
Thermal Coductivity  Cal/ Sec C16 x10
Coeffiecient of Expansion   per C(9-36) x10
Tensile Strength          kgf/mm 30-45
Compression Strength    kgf/mm 50-70
Modulus of Elasticity      kgf/mm (14-21)x10
Calcining Temperature   C 600-800
Ignition Loss             ( 900 C x3Hrs ) %4-5
Acid Reaction            H SO  Not affected
Alkali Reaction          NaOH   Not affected
Dielectric Strength      Kv/0.1mm  18-25
Dielectric Constant      ( 1MHZ)  6-9
Power Factor           (50Hz) %  0.01-0.03
Power Factor          (1MHz) %  0.08-0.09
Resistivity                10-10
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