Properties
Physical Properties
Hardness
7
7
Grain Size
Medium to Coarse Grained
Fine Grained
Fracture
Conchoidal
Conchoidal
Streak
White
Black
Porosity
Less Porous
Highly Porous
Luster
Grainy, Pearly and Vitreous
Not Available
Compressive Strength
178.54 N/mm2
12
Not Available
Cleavage
Perfect
Not Available
Toughness
2.1
1.6
Specific Gravity
2.6-2.63
Not Available
Transparency
Translucent to Opaque
Opaque
Density
2.6-2.65 g/cm3
Not Available
Thermal Properties
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Impact Resistant, Pressure Resistant, Wear Resistant
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