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Properties of Phonolite and Novaculite


Properties

Physical Properties
  
  

Hardness
7   
5.5-6   

Grain Size
Fine Grained   
Fine Grained   

Fracture
Conchoidal   
Conchoidal to Uneven   

Streak
Colorless   
White   

Porosity
Less Porous   
Less Porous   

Luster
Waxy and Dull   
Greasy to Dull   

Compressive Strength
450.00 N/mm2   
1
150.00 N/mm2   
14

Cleavage
Non-Existent   
Poor   

Toughness
1.5   
Not Available   

Specific Gravity
2.5-2.7   
2.6   

Transparency
Translucent to Opaque   
Translucent to Opaque   

Density
2.7 g/cm3   
2.6 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.74 kJ/Kg K   
19
Not Available   

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant   
Heat Resistant, Impact Resistant, Wear Resistant   

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