Physical Properties
Hardness
1-23.5-4
1
7
👆🏻
Grain Size
Medium to Fine Coarse Grained
Medium to Fine Coarse Grained
Fracture
Conchoidal
Conchoidal
Streak
White
White
Porosity
Highly Porous
Less Porous
Luster
Phyllitic
Vitreous and Pearly
Compressive Strength
50.00 N/mm2140.00 N/mm2
0.15
450
👆🏻
Cleavage
Crenulation and Pervasive
Perfect
Toughness
1.2
1
Specific Gravity
2.72-2.732.8-3
0
8.4
👆🏻
Transparency
Opaque
Transparent to Translucent
Density
2.18-3.3 g/cm32.8-2.9 g/cm3
0
1400
👆🏻
Thermal Properties
Specific Heat Capacity
0.79 kJ/Kg K0.92 kJ/Kg K
0.14
3.2
👆🏻
Resistance
Heat Resistant, Pressure Resistant, Water Resistant
Heat Resistant, Pressure Resistant, Wear Resistant