Properties
Physical Properties
Hardness
5.5-6
6
Grain Size
Fine Grained
Medium to Coarse Grained
Fracture
Conchoidal
Not Available
Streak
Black
White
Porosity
Less Porous
Less Porous
Luster
Greasy to Dull
Grainy, Pearly and Vitreous
Compressive Strength
200.50 N/mm2
9
175.00 N/mm2
13
Cleavage
Not Available
Not Available
Toughness
2.1
Not Available
Specific Gravity
2.34-2.40
2.6-2.7
Transparency
Opaque
Opaque
Density
Not Available
2.6-2.8 g/cm3
Thermal Properties
Specific Heat Capacity
1.12 kJ/Kg K
7
0.79 kJ/Kg K
16
Resistance
Heat Resistant
Heat Resistant, Wear Resistant
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