Properties of Pumice and Coal
Grain Size
Fine Grained
Medium to Fine Coarse Grained
Fracture
Planar
Conchoidal
Streak
White, Greenish White or Grey
Black
Porosity
Highly Porous
Less Porous
Luster
Earthy
Dull to Vitreous to Submetallic
Compressive Strength
Not Available
Cleavage
Perfect
Non-Existent
Toughness
3
Not Available
Specific Gravity
2.86
1.1-1.4
Transparency
Opaque
Opaque
Density
0.25-0.3 g/cm3
1100-1400 g/cm3
Resistance
Impact Resistant, Pressure Resistant
Heat Resistant
Pumice vs Coal Properties
Properties of Pumice and Coal play an important role in determining the type of rock. Along with Pumice vs Coal properties, get to know more about Pumice Definition and Coal Definition. For the ease of understanding, the properties of rocks are divided into physical and thermal properties. Rocks have a variety of properties like hardness, color, specific gravity, fracture, cleavage, luster etc. Know all about physical and thermal properties of Pumice and Coal.