1 Properties
1.1 Physical Properties
1.1.1 Hardness
1.1.2 Grain Size
Medium Grained
Medium to Fine Coarse Grained
1.1.3 Fracture
1.1.4 Streak
1.1.5 Porosity
Less Porous
Highly Porous
1.1.6 Luster
Dull to Pearly to Subvitreous
Phyllitic
1.1.7 Compressive Strength
1.1.8 Cleavage
Perfect
Crenulation and Pervasive
1.1.9 Toughness
1.1.10 Specific Gravity
1.1.11 Transparency
1.1.12 Density
2.4-2.7 g/cm32.18-3.3 g/cm3
0
1400
1.2 Thermal Properties
1.2.1 Specific Heat Capacity
1.2.2 Resistance
Heat Resistant
Heat Resistant, Pressure Resistant, Water Resistant