Properties of Obsidian and Scoria
Physical Properties
  
  
Hardness
5-5.5
  
5-6
  
Grain Size
Not Applicable
  
Fine Grained
  
Fracture
Conchoidal
  
Conchoidal
  
Streak
White
  
White
  
Porosity
Very Less Porous
  
Highly Porous
  
Luster
Vitreous
  
Subvitreous to Dull
  
Compressive Strength
Not Available
  
Cleavage
Non-Existent
  
Perfect
  
Toughness
Not Available
  
2.1
  
Specific Gravity
2.6-2.7
  
Not Available
  
Transparency
Translucent
  
Opaque
  
Density
2.6 g/cm3
  
Not Available
  
Thermal Properties
  
  
Specific Heat Capacity
0.92 kJ/Kg K
  
10
Not Available
  
Resistance
Heat Resistant, Impact Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Obsidian vs Scoria Properties
Properties of Obsidian and Scoria play an important role in determining the type of rock. Along with Obsidian vs Scoria properties, get to know more about Obsidian Definition and Scoria 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 Obsidian and Scoria.