Properties
Physical Properties
Hardness
5.5-6
6-7
Grain Size
Coarse Grained
Large and Coarse Grained
Fracture
Irregular
Not Available
Streak
White
White
Porosity
Less Porous
Less Porous
Luster
Shiny
Dull to Grainy with Sporadic parts Pearly and Vitreous
Compressive Strength
107.55 N/mm2
19
175.00 N/mm2
13
Cleavage
Imperfect
Not Available
Toughness
2.1
Not Available
Specific Gravity
3-3.01
2.6-2.7
Transparency
Translucent to Opaque
Opaque
Density
3.1-3.4 g/cm3
2.65-2.75 g/cm3
Thermal Properties
Specific Heat Capacity
1.25 kJ/Kg K
6
0.79 kJ/Kg K
16
Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Wear Resistant
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