Properties | Units | Muscovite | Color |
| Ruby/ Green/ White | Density | gm/cm3 | 2.6 3.2 | Specific heat |
| 0.21 | Hardness | Moh scale | 2.8 3.2 |
| Shore Test | 80-105 | Breakdown voltage | KV/mm | 120 200 | Coefficient of expansion per C perpendicular to cleavage plane |
| 9 x 10-6 36 x 10-6 | Thermal conductivity perpendicular to cleavage plane | Gm.cal/sec/cm2/C/cm | about 0.0013 |
| BTU/hr/ft2/0f/ft | about 0.31 | Thermal conductivity parallel to cleavage plane | Gm.cal/sec/cm2/C/cm |
|
| BTU/hr/ft2/0f/ft |
| Water of Constitution % |
| 4.5 | Moisture Absorption |
| Very low | Volume Resistivity | 25C (77F) ohm cm | 40 x 1013 -2 x 1017 | Acid Reaction |
| affected by hydrofluoric acid | Insulation resistence | x1013ohm/cm | 4-20000 | Calcining temp | C | 700-800 | Max. operating temp | C | 500-600 | Optic axial angle | degrees | 55 75 | Tensile strength | MN/m2 | 175 | Shear strength | MN/m2 | 220 270 | Compression strength | MN/m2 | 190 285 | Modulus of Elasticity | Kgfcm2 x 10-3 lbf/in2 x 10-6 | 1400 2100 20 30 | Loss tangent | x10-4 | 1-4 | Permittivity at 15C (60F) |
| 6 7 |
|