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Occurrence

  •  Australia
  •  Czechrepublic
  •  England
  •  India
  •  Israel
  •  Mongolia
  •  Russia
  •  Scotland
  •  United States
Agate
Color :  Available in red, yellow, white, pink, gray.
Hardness :  On moh's scale its density lies between 6 and 7.
Density :  2.30 - 2.41 kg/m3
Comprehensive strength :  approx 360 to 465 kg/m2
Porosity :  low
Water absorption :  The water absorbing capacity is up to 1% only.

   The chemical constitution of sandstone is similar to the same as that of sand.
   Sandstone is usually composed of silica, calcium carbonate, or iron oxide. It is mainly made of quartz.

Constituent of sandstone by percentage

  • Silica (Sio2)
  • Alumina (Al2O3)
  • Iron oxide (Fe2O3)
  • Soda and potash (NaO & KO2)
  • Lime (CaO)
  • Magnesia (Mgo)
  • 91% - 93%
  • 1.3% - 1.45%
  • 1.4% - 1.55%
  • 1.0 % - 1.2%
  • 0.7% - 0.9%
  • 0.22% - 0.25%
  • High mechanical strength
  • Resistant to acids and alkalies
  • Resistant to air and saline water
  • Resistant to corrosion and weathering
  • Excellent binding with cement
  • Load bearing
  • Resistance with heat
Sandstone
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