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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% | |
![Him Black Quartzite Natural](javascript:openchild("/pcat-gifs/products-large1/him-black-quartzite-nat-b-1.jpg&Him%20Black%20Quartzite%20Natural&Quartzite&Q-02");)
![Him White Quartzite Natural](javascript:openchild("/pcat-gifs/products-large1/him-white-quartzite-natu-b-1.jpg&Him%20White%20Quartzite%20Natural&Quartzite&Q-01");)
