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 than 1% |
Lime (CaO) | Less than 0.5% |
Magnesia (MgO) | Less than 0.5% |
Loss On Ignition (LOI) | Less than 0.5% |
SLABS | Gang saw and Cutter |
CUT TO SIZE | 30X30,30X60,60X60,60X120,120X120 and others |
FINISHES | Polished, Leather, Honed, Flamed, Antique, bush hammered, Flamed & brush etc. |