Properties of Greywacke and Tephrite
Physical Properties
  
  
Hardness
6-7
  
6.5
  
Grain Size
Angular and Fine
  
Medium to Fine Coarse Grained
  
Fracture
Conchoidal
  
Uneven
  
Streak
White
  
Bluish Black
  
Porosity
Highly Porous
  
Very Less Porous
  
Luster
Dull
  
Subvitreous to Dull
  
Compressive Strength
Not Available
  
90.00 N/mm
2
  
22
Cleavage
Perfect
  
Crenulation and Pervasive
  
Toughness
2.6
  
2.4
  
Specific Gravity
2.2-2.8
  
2.86
  
Transparency
Opaque
  
Opaque
  
Density
2.6-2.61 g/cm3
  
2.8-2.9 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
0.92 kJ/Kg K
  
10
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
  
Heat Resistant, Impact Resistant
  
Greywacke vs Tephrite Properties
Properties of Greywacke and Tephrite play an important role in determining the type of rock. Along with Greywacke vs Tephrite properties, get to know more about Greywacke Definition and Tephrite 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 Greywacke and Tephrite.