Natural Indian Minerals
Granite Stones

Name and Composition - It has complex assemblages of silicate mineral like feldspar (K,Na,Ca feldspars ) with/without quartz and minor amount of mica, amphiboles, pyroxene, iron oxide etc.

Physical Properties - Granite are crystalline rocks of plutonic to extrusive origin displaying pleasant colours, being hard, it takes good polish which lasts for a long time.

Mode of Occurrence - Occurs as mounds, sheets, dykes etc., formed due to igneous extrusion/instrusion; also forms part of massif batholiths, bosses, stocks and laccolith/phacoliths.

Uses - Used as decorative and dimensional stone for wall cladding, roofing, flooring stone, grave-stone, kitchen slabs, idol making, harbor barricades, garden landscaping furnitures, cobble stone etc.

Mineral based Industries – Processing and polishing industries, tiling plants, artisan works.

Industrial Prospects – There is ample scope for establishing more units of processing and polishing tiling plants, artisan works.

Physical Properties
Sp. gr.
Compressive strength
3 to 3.5
4.8 to 4.9
200 MPa
2.65 to 2.75 g/cm3
Chemical Properties
Silica Oxide (SiO2)
Alumina Oxide (Al2O3)
Ferric Oxide (Fe2O3)
Titanium Oxide (TiO2)
Sodium Oxide (Na2O)
Potash Oxide (K2O)
Calcium Oxide (CaO)
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