1 Properties
1.1 Physical Properties
1.1.1 Hardness
1.1.2 Grain Size
Coarse Grained
Large and Coarse Grained
1.1.3 Fracture
Conchoidal to Uneven
Uneven, Splintery or Conchoidal
1.1.4 Streak
Light to dark brown
White
1.1.5 Porosity
Highly Porous
Highly Porous
1.1.6 Luster
Grainy, Pearly and Vitreous
Earthy
1.1.7 Compressive Strength
1.1.8 Cleavage
1.1.9 Toughness
1.1.10 Specific Gravity
1.1.11 Transparency
Opaque
Translucent to Opaque
1.1.12 Density
2.2-2.35 g/cm3Not Available
0
1400
1.2 Thermal Properties
1.2.1 Specific Heat Capacity
0.75 kJ/Kg K3.20 kJ/Kg K
0.14
3.2
1.2.2 Resistance
Heat Resistant, Impact Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant