1 Properties
1.1 Physical Properties
1.1.1 Hardness
1.1.2 Grain Size
Medium to Fine Coarse Grained
Coarse Grained
1.1.3 Fracture
Conchoidal
Conchoidal to Uneven
1.1.4 Streak
Black
Light to dark brown
1.1.5 Porosity
Less Porous
Highly Porous
1.1.6 Luster
Shiny
Grainy, Pearly and Vitreous
1.1.7 Compressive Strength
1.1.8 Cleavage
Non-Existent
Not Available
1.1.9 Toughness
Not Available
Not Available
1.1.10 Specific Gravity
1.1.11 Transparency
1.1.12 Density
1.25-2.5 g/cm32.2-2.35 g/cm3
0
1400
1.2 Thermal Properties
1.2.1 Specific Heat Capacity
1.32 kJ/Kg K0.75 kJ/Kg K
0.14
3.2
1.2.2 Resistance
Heat Resistant, Water Resistant
Heat Resistant, Impact Resistant