Properties
Physical Properties
Hardness
6-7
3
Grain Size
Large and Coarse Grained
Fine to Coarse Grained
Fracture
Not Available
Splintery
Streak
White
White, Greenish White or Grey
Porosity
Less Porous
Very Less Porous
Luster
Dull to Grainy with Sporadic parts Pearly and Vitreous
Metallic
Compressive Strength
175.00 N/mm2
13
200.00 N/mm2
10
Cleavage
Not Available
Disjunctive
Toughness
Not Available
2.4
Specific Gravity
2.6-2.7
2.46-2.73
Transparency
Opaque
Opaque
Density
2.65-2.75 g/cm3
1.6-2.5 g/cm3
Thermal Properties
Specific Heat Capacity
0.79 kJ/Kg K
16
0.92 kJ/Kg K
10
Resistance
Heat Resistant, Wear Resistant
Heat Resistant
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