Gray of Lao Mountain 
  
  - Gray of Lao Mountain  Black Details
 
  - Category: Granite
 
  - Country of origin:China 
 
  - Main Color:Dark gray
 
  - Chemical Composition(%) 
 
  - 
  
    
    
      | SiO2: 61.70 | 
      Fe2O3:3.08  |  
    
      | Al2O3: 13.17  | 
      CaO: 1.76 |  
    
      | MgO:10.58  | 
      Na2O:3.73  |    
  - Physical Properties 
 
  - Density(g/cm3): 2.60
 
  - Water Absorption(%):0.31 
 
  - Bending Strength(MPa): 161.10
 
  - Hardness/modulus of elasticity(MPa)::10.30 
   
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