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Marble

"Marble" is derived from Latin word "Marmar" which comes from the Greek root "Marmarous" meaning a shining stone. Marble is a nonfoliated metamorphic rock resulting from the metamorphism of limestone. Commercially, marble is any crystalline rock composed predominantly of calcite, dolomite or serpentine, having 3-4 hardness, which can be excavated as blocks and can be sawn into marble slabs and marble tiles. Marble is used for wall cladding, roofing and flooring and a variety of other interior and exterior applications.




Physically, these are recrystallized, Hard, Compact, fine to very fine grained metamorphosed rocks capable of taking shining polish.

Hardness 3 to 4 on Moh's Scale
Density 2.55 to 2.7 Kg/cm3
Compressive Strength 70 to 140 N/mm2
Modulus of Rupture 12 to 18 N/mm2
Water Absorption Less than 0.5% (except Rainforest Green/Brown with 2-3%)
Porosity Quite low
Weather Impact Resistant


Chemically, they are crystalline rocks composed predominantly of calcite, dolomite or serpentine minerals. The other minor constituents vary from origin to origin.

Lime (CaO) 28-32%
Silica (SiO2) 3-30% (varies with variety)
MgO 20 to 25%
FeO + Fe2O3 1-3%
Loss On Ignition (LOI) 20-45%
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