Properties of Pumice and Obsidian
Grain Size
Fine Grained
Not Applicable
Fracture
Planar
Conchoidal
Streak
White, Greenish White or Grey
White
Porosity
Highly Porous
Very Less Porous
Cleavage
Perfect
Non-Existent
Toughness
3
Not Available
Specific Gravity
2.86
2.6-2.7
Transparency
Opaque
Translucent
Density
0.25-0.3 g/cm3
2.6 g/cm3
Resistance
Impact Resistant, Pressure Resistant
Heat Resistant, Impact Resistant
Pumice vs Obsidian Properties
Properties of Pumice and Obsidian play an important role in determining the type of rock. Along with Pumice vs Obsidian properties, get to know more about Pumice Definition and Obsidian 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 Obsidian.