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Occurrence

  •  Greece
  •  Hungary
  •  Iceland
  •  Italy
  •  Mexico
  •  India
  •  Turkey
  •  United States
  •  United Kingdom
Agate
Compressive Strength :  100-300 MPa
Tensile Strength :  10-30 MPa
Shear Strength :  20-60 MPa
Bulk Density :  2.8-2.9 Mg/m3
Porosity :  0.1-1.0%

Basalts consist of magnesium, feldspar, pyroxene and iron, with amount of olivine and amphibole.

SiO2 45-55%
Alkalis :  2-6 %
TiO2 0.5-2.0 %
FeO :  5-14 %
Al2O3 14 %
CaO :  10 %
MgO :  5 to 12 %
  • Frost resistant
  • Extremely hard stone
  • Extremely versatile
  • Resistant to heat
  • Resistant to abrasion
Basalt
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