Properties of Obsidian and Dacite
Physical Properties
  
  
Hardness
5-5.5
  
2-2.25
  
Grain Size
Not Applicable
  
Medium to Fine Coarse Grained
  
Fracture
Conchoidal
  
Conchoidal
  
Streak
White
  
White
  
Porosity
Very Less Porous
  
Less Porous
  
Luster
Vitreous
  
Subvitreous to Dull
  
Compressive Strength
Not Available
  
Cleavage
Non-Existent
  
Perfect
  
Toughness
Not Available
  
Not Available
  
Specific Gravity
2.6-2.7
  
2.86-2.87
  
Transparency
Translucent
  
Translucent
  
Density
2.6 g/cm3
  
2.77-2.771 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.92 kJ/Kg K
  
10
0.92 kJ/Kg K
  
10
Resistance
Heat Resistant, Impact Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Obsidian vs Dacite Properties
Properties of Obsidian and Dacite play an important role in determining the type of rock. Along with Obsidian vs Dacite properties, get to know more about Obsidian Definition and Dacite 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 Dacite.