Properties
Physical Properties
Hardness
3
6.5
Grain Size
Medium to Fine Coarse Grained
Medium to Fine Coarse Grained
Fracture
Conchoidal
Uneven
Streak
White
Bluish Black
Porosity
Less Porous
Very Less Porous
Luster
Subvitreous to Dull
Subvitreous to Dull
Compressive Strength
Not Available
90.00 N/mm2
22
Cleavage
Not Available
Crenulation and Pervasive
Toughness
1
2.4
Specific Gravity
2.86-2.87
2.86
Transparency
Opaque
Opaque
Density
2.84-2.86 g/cm3
2.8-2.9 g/cm3
Thermal Properties
Specific Heat Capacity
Not Available
0.92 kJ/Kg K
10
Resistance
Heat Resistant, Pressure Resistant
Heat Resistant, Impact Resistant
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