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Sandstone

Rocks and minerals are among the most valuable gifts that nature has bestowed to mankind. Stone are in use since 'Stone Age' and have played a in use since 'Rocks and minerals are among the most valuable gifts.

Sandstone is a sedimentary rock composed mainly of sand-size mineral or rock grains. Sandstone comes in many colors but the most common are brown, gray, tan, yellow, red, and white. Sandstone is weather resistant that makes sandstone a common building and paving material. Sandstone when laid as building stone gives one of the most magnificent look.




Physically, they are very Hard, Compact, Fine grained, equi-granular homogeneous rocks of sedimentary nature (Sandstone) & metamorphic nature (Quartzite).

Color Minor color tonal variations exist but within the tolerance limit.
Hardness 6.5 to 7 on Moh's Scale
Density 2.3 to 2.4 Kg/cm3
Compressive Strength 90 to 140 N/mm2
Modulus of Rupture 16-40 N/mm2
Water Absorption 1.0 - 1.2 %
Porosity Low to very low
Weather Impact Resistant


Chemically, they are very resistant Mono-Mineralic rocks, principally composed of silica. The other minor constituents vary from origin to origin

SiO2 95-97%
Iron (Fe2O3) 0.5%-1.5%
Alumina (Al2O3) 1 to 1.5%
Soda (Na2O) & Potash (Kro) Less then 1%
Lime (CaO) Less then 0.5%
Magnesia (MgO) Less then 0.5%
Loss On Ignition (LOI) Less then 0.5%