Properties of Obsidian and Flint
Physical Properties
  
  
Hardness
5-5.5
  
7
  
Grain Size
Not Applicable
  
Very fine-grained
  
Fracture
Conchoidal
  
Conchoidal
  
Streak
White
  
White
  
Porosity
Very Less Porous
  
Highly Porous
  
Luster
Vitreous
  
Vitreous
  
Compressive Strength
450.00 N/mm2
  
1
Cleavage
Non-Existent
  
Non-Existent
  
Toughness
Not Available
  
1.5
  
Specific Gravity
2.6-2.7
  
2.5-2.8
  
Transparency
Translucent
  
Translucent to Opaque
  
Density
2.6 g/cm3
  
2.7-2.71 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.92 kJ/Kg K
  
10
0.74 kJ/Kg K
  
19
Resistance
Heat Resistant, Impact Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Obsidian vs Flint Properties
Properties of Obsidian and Flint play an important role in determining the type of rock. Along with Obsidian vs Flint properties, get to know more about Obsidian Definition and Flint 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 Flint.