Properties of Porphyry and Anthracite
Physical Properties
  
  
Hardness
6-7
  
1-1.5
  
Grain Size
Fine Grained
  
Medium to Fine Coarse Grained
  
Fracture
Irregular
  
Conchoidal
  
Streak
White
  
Black
  
Porosity
Less Porous
  
Less Porous
  
Luster
Dull
  
Shiny
  
Cleavage
Imperfect
  
Non-Existent
  
Toughness
1.7
  
Not Available
  
Specific Gravity
2.5-4
  
1.1-1.4
  
Transparency
Translucent to Opaque
  
Opaque
  
Density
2.5-2.52 g/cm3
  
1.25-2.5 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
1.32 kJ/Kg K
  
4
Resistance
Heat Resistant, Impact Resistant
  
Heat Resistant, Water Resistant
  
Porphyry vs Anthracite Properties
Properties of Porphyry and Anthracite play an important role in determining the type of rock. Along with Porphyry vs Anthracite properties, get to know more about Porphyry Definition and Anthracite 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 Porphyry and Anthracite.