Bentonite Minerals
Name and Composition - A special assemblage of clay minerals, viz. montmorillonite: (Mg, Ca) O Al2 O3 5SiO2.nH2O(n=5-7) (Hydrous aluminum silicate) and Beidellite: AI2O33SiO2.4H2O (Hydrous aluminum silicate).
Physical Properties - It has high bonding property. Sp.gr. 2.4 - 2.8, fusion point varies from 1330 C to 1430 C.
Mode of Occurrence - Sedimentary bedded deposit.
Uses - Sodium bentonite is used for pelletization of iron ore, in foundry and oil well drilling. it is used as a suspending agent in oil well drilling fluids. Bentonite gels are used as a carrier for a number of cosmetic preparations, tooth paste, creams etc. Bentonite is also used in chemical, rubber, insecticide and pesticide industries, in civil construction work etc. Poor grade bentonite having least swelling property is used in ceramic industries.
Mineral based Industries – Pluverisering units.
Industrial Prospects – Pluverisering units.
Physical Properties
Hardness
Sp. gr.
Density
Sp. gr.
Density
6 to 6.5
2.4 to 2.8
3 g/cm3
2.4 to 2.8
3 g/cm3
Chemical Properties
Silica (SiO2)
Alumina (Al2O3)
Potassium Oxide (K2O)
Sodium Oxide (Na2O)
Calcium Oxide (CaO)
Ferric Oxide (Fe2O3)
Manesium Oxide (MgO)
Moisure
Alumina (Al2O3)
Potassium Oxide (K2O)
Sodium Oxide (Na2O)
Calcium Oxide (CaO)
Ferric Oxide (Fe2O3)
Manesium Oxide (MgO)
Moisure
66.60 %
17.60 %
< 0.31 %
< 2.50 %
< 0.57 %
< 3.67 %
< 1.80 %
< 1.67 %
17.60 %
< 0.31 %
< 2.50 %
< 0.57 %
< 3.67 %
< 1.80 %
< 1.67 %
Indian Minerals
Metallic Minerals
Cadmium Ore
Copper Ore
Lead Ore
Zinc Ore
Iron Ore
Manganese Ore
Tungsten Ore
Bauxite Ore
Limestone and Dolomite
Limestone
Dolomite
Fertilizer Minerals
Gypsum
Pyrite
Rock Phosphate
Saltpeter
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Lignite
Glass and Ceramic Minerals
Ball Clay
China Clay
Feldspar
Fire Clay
Kyanite
Quartz
Quartzite
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Precious and Semiprecious Minerals
Aquamarine
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Industrial Minerals
Asbestos
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Bentonite
Calcite
Fluorite
Fuller's Earth
Garnet
Graphite
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Mica
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Ochre
Pyrophylite
Siliceous Earth
Silimanite
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Vermiculite
Wollastonite
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Granite
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Serpentinite
Shale/Schist/Phyllite
Slate