Properties of Porphyry and Coquina
Physical Properties
  
  
Hardness
6-7
  
1-2
  
Grain Size
Fine Grained
  
Coarse Grained
  
Fracture
Irregular
  
Irregular
  
Streak
White
  
White
  
Porosity
Less Porous
  
Highly Porous
  
Luster
Dull
  
Dull to Vitreous to Submetallic
  
Cleavage
Imperfect
  
Not Available
  
Toughness
1.7
  
Not Available
  
Specific Gravity
2.5-4
  
1.10-2.24
  
Transparency
Translucent to Opaque
  
Opaque
  
Density
2.5-2.52 g/cm3
  
2.8-2.9 g/cm3
  
Thermal Properties
  
  
Resistance
Heat Resistant, Impact Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Porphyry vs Coquina Properties
Properties of Porphyry and Coquina play an important role in determining the type of rock. Along with Porphyry vs Coquina properties, get to know more about Porphyry Definition and Coquina 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 Coquina.