Properties of Gneiss and Lignite
Physical Properties
  
  
Hardness
7
  
1
  
Grain Size
Medium to Coarse Grained
  
Medium to Fine Coarse Grained
  
Fracture
Irregular
  
Conchoidal
  
Streak
White
  
Black
  
Porosity
Very Less Porous
  
Highly Porous
  
Luster
Dull
  
Dull to Vitreous to Submetallic
  
Compressive Strength
125.00 N/mm
2
  
17
Not Available
  
Cleavage
Poor
  
Non-Existent
  
Toughness
1.2
  
Not Available
  
Specific Gravity
2.5-2.7
  
1.1-1.4
  
Transparency
Translucent to Opaque
  
Opaque
  
Density
2.6-2.9 g/cm3
  
800-801 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
1.26 kJ/Kg K
  
5
Resistance
Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant
  
Heat Resistant
  
Gneiss vs Lignite Properties
Properties of Gneiss and Lignite play an important role in determining the type of rock. Along with Gneiss vs Lignite properties, get to know more about Gneiss Definition and Lignite 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 Gneiss and Lignite.