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 C

16 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