Natural Indian Minerals
Sandstone Minerals

Name and Composition - SiO2 with impurities like alumina, CaCO3, Fe2O3 (sand grains cemented by siliceous or ferruginous matter).

Physical Properties - Sandstone is fine to medium grained hard & massive as well as splittable rock having varying colours like light green, brown, dark brown, reddish brown, red, purple etc. It occurs in bedded form.

Mode of Occurrence - Occurs as horizontally disposed sedimentary bedded deposits in vindhyan super group and trans aravalli formations spread over 35000 sq. km. area.

Uses - It is used as decorative/building stone in flooring, roofing, facing, architectural work like carving monuments etc. It is used in acid resistant building and buildings near see shore.

Mineral based Industries – Cutting and polishing industries, artisan work at cottage level.

Industrial Prospects – Cutting and polishing industries, artisan work.


Physical Properties
Hardness
Sp. gr.
Water absorption
Density
Compressive strenght
Modulus of rupture
Color
4 to 4.5
2.60
1.25 %
2.51 g/cm3
390 Kg/cm3
220 Kg/cm3
Red, Pink, Buff, Brown
Chemical Properties
Silica (SiO2)
Alumina (Al2O3)
Calcium Oxide (CaO)
Ferric Oxide (Fe2O3)
Manesium Oxide (MgO)
Titanium Oxide (TiO2)
Loss on Ignition LOI
96.80 - 96.96 %
1.06 - 1.07 %
0.55 %
1.21 %
0.21 %
0.01 %
0.10 %
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