Speciality : It is usually white in color but other varieties are also found. Principal characteristics are transparency, high degree of purity and perfect crystalline structure. In polarized films and lenses also, it is useful. Rajasthan is one of principal producing states in the country. It is marketed in pulverized form.

Uses :

• It is used as flux in glass industry.
• Also used as filler in rubber industry.
• It is also utilized in sizing of textile goods. It also provides mortar cement, bleaching powder etc.
• The transparent variety is used in optical industry for manufacture of nicol prism.
• Ceramic industry also another consumer of calcite.
• Calcite in pulverized state is consumed for the manufacture of paint and distemper. It is also used in pesticides and insecticides.
• Chemical Composition of Calcite
• It is natural calcium carbonate.

Main contents are :

• CaO - 56 %
• CO2 - 44 %

Speciality : It can be cut easily and scratched by nail. In present era talc after calcining called ‘lava’. Talc is marketed in form of fine powder and widely employed. Rajasthan emerged as leading producer of talc. It is mainly consumed in cosmetics, paper and rubber industries.

Uses :

• Lava has assumed a new importance in manufacturing of low loss ceramic materials required for high frequency insulation in all kinds of radio. Radar, television and related instruments.
• It is also used in paint industry as an extender, as filler in rubber, plastics, linoleum, asbestos products, textiles, polishes and soaps.
• It is utilized as a loading agent for paper of all kinds. And also used as refractory materials.
• It used in manufacturing of ceramic required for switch board and spark plugs. It is used as a carrier of fertilizer, pesticides and insecticidal dust.

Speciality : Its production mainly reported from Madhya Pradesh. It is also exported to Bangladesh. It also consumed in fertilizer industry Right quantity of dolomite in furnace give good fluxing effect and helps in completion of reaction in the melt. Dolomite divided into two grades in steel and Ferro-alloys industries.

Uses :

• The use of dolomite is gaining ground and considerably diversified. Iron and steel industries are the potential consumers.
• In manufacturing steel by basic open hearth furnace and L.D. process the importance of dolomite as refractory material has greatly increased
• Dead burned dolomite used as refractory lining in basic open hearth furnaces and Bessemer converters.
• Also used as basic flux in smelting of iron ore in blast furnace removes alumina and slag.
• All the seven steel plants in the country consume dolomite. It used in blast furnace and steel making shop.
• Glass industry is also another consumer of dolomite. Dolomite free from iron is used in making of sheet and optical glasses.
• Also as filler in manufacturing of mineral wool, as in paints and varnishes and as hardening agent in rubber.
• It also provides soil conditioner and used as an accelerator in vulcanizing process and as in decorative building material and polish.
• Dolomite marble chips are used for floorings.
• Chemical Composition of Dolomite
• It is a double carbonate of magnesium and calcium (CaCO3.MgCO3)

Main contents are :

• MgO - 21.7 %
• CaO - 30.4 %

Speciality : From 1961, limestone in large quantity is utilized in manufacturing of nitro lime a fertilizer. Its largest consumer is sugar and cement industry. It is suitable for alkali manufacture. It protects fibers by lining, it often become colloidal and separates as gelatinous precipitate and this feature of it is utilized in sugar industry.

Uses :

• The consumption of limestone is by cement industry, iron and steel and chemical plants.
• It forms the basic raw material in the manufacturing of Portland cement. It also used in production of fertilizer.
• It is utilized in classification of sugar, cooking of paper, bamboos, pulps and rags, bleaching of textile sand leather, besides being used in whitewash.
• It helps in production of bleaching powder, slaked lime, whitening and also used as filler in rubber goods, as extender in paint industry and also in manufacturing of lipstick.

Speciality : The pure white quality of soapstone after grinding to powder is known as ‘French chalk’ in trade. Its production mainly comes from Udaipur, Dungarpur, Bhilwara and jaipur districts of Rajasthan and chittor district of Andhra Pradesh. Especially French chalk is in great demand and India exported it mainly to Kenya, Norway and U.K.

Uses :

• It is mainly used for carving out pots bricks. It is employed as linings for various kinds of stoves, ovens and fireboxes.
• Sawn blocks of soapstone are used in wood pulp and paper mills as lining for the alkali recovery furnaces and kilns and tanks.
• Bricks made from crushed soapstone, bonded with silicates of soda are used for the manufacturing of furnaces in which crude lead is softened.
• Its use in manufacturing of pesticides and for coating calcium ammonium nitrate (fertilizer) has been developed.

Speciality : Barite ore is ground to a range of products of the different sizes needed for the variety of applications. Most commercially available products are 200 or 325 mesh, or finer, down to a few microns. The ore is selected and the process is controlled for one or more of the following properties: color, particle size, specific gravity and bulk density. Some barytes is available in a bleached form to improve color, and there is a precipitated barium sulfate, referred to as “blanc fixe, ” that finds use in high-end paints and coatings and in pharmaceutical applications.

Uses :

• The largest application for barite is as a weighting agent in natural gas and oil field drilling muds. The density of barite helps in down-hole flow and bit lubrication.
• One of its industrial end uses is as a weighting agent additive in cement, rubber and urethane foams. It is used in paint and powder coatings for metal protection and processing improvement. Barite is also used in friction products such as brake pads and clutch surfaces.

Speciality : It is usually white in color but other varieties are also found. Principal characteristics are transparency, high degree of purity and perfect crystalline structure. In polarized films and lenses also, it is useful. Rajasthan is one of principal producing states in the country. It is marketed in pulverized form.

Uses :

• It is used as flux in glass industry.
• Also used as filler in rubber industry.
• It is also utilized in sizing of textile goods. It also provides mortar cement, bleaching powder etc.
• The transparent variety is used in optical industry for manufacture of nicol prism.
• Ceramic industry also another consumer of calcite.
• Calcite in pulverized state is consumed for the manufacture of paint and distemper. It is also used in pesticides and insecticides.
• Chemical Composition of Calcite
• It is natural calcium carbonate.

Main contents are :

• CaO - 56 %
• CO2 - 44 %

Speciality : It can be cut easily and scratched by nail. In present era talc after calcining called ‘lava’. Talc is marketed in form of fine powder and widely employed. Rajasthan emerged as leading producer of talc. It is mainly consumed in cosmetics, paper and rubber industries.

Uses :

• Lava has assumed a new importance in manufacturing of low loss ceramic materials required for high frequency insulation in all kinds of radio. Radar, television and related instruments.
• It is also used in paint industry as an extender, as filler in rubber, plastics, linoleum, asbestos products, textiles, polishes and soaps.
• It is utilized as a loading agent for paper of all kinds. And also used as refractory materials.
• It used in manufacturing of ceramic required for switch board and spark plugs. It is used as a carrier of fertilizer, pesticides and insecticidal dust.

Speciality : Its production mainly reported from Madhya Pradesh. It is also exported to Bangladesh. It also consumed in fertilizer industry Right quantity of dolomite in furnace give good fluxing effect and helps in completion of reaction in the melt. Dolomite divided into two grades in steel and Ferro-alloys industries.

Uses :

• The use of dolomite is gaining ground and considerably diversified. Iron and steel industries are the potential consumers.
• In manufacturing steel by basic open hearth furnace and L.D. process the importance of dolomite as refractory material has greatly increased
• Dead burned dolomite used as refractory lining in basic open hearth furnaces and Bessemer converters.
• Also used as basic flux in smelting of iron ore in blast furnace removes alumina and slag.
• All the seven steel plants in the country consume dolomite. It used in blast furnace and steel making shop.
• Glass industry is also another consumer of dolomite. Dolomite free from iron is used in making of sheet and optical glasses.
• Also as filler in manufacturing of mineral wool, as in paints and varnishes and as hardening agent in rubber.
• It also provides soil conditioner and used as an accelerator in vulcanizing process and as in decorative building material and polish.
• Dolomite marble chips are used for floorings.
• Chemical Composition of Dolomite
• It is a double carbonate of magnesium and calcium (CaCO3.MgCO3)

Main contents are :

• MgO - 21.7 %
• CaO - 30.4 %

Speciality : From 1961, limestone in large quantity is utilized in manufacturing of nitro lime a fertilizer. Its largest consumer is sugar and cement industry. It is suitable for alkali manufacture. It protects fibers by lining, it often become colloidal and separates as gelatinous precipitate and this feature of it is utilized in sugar industry.

Uses :

• The consumption of limestone is by cement industry, iron and steel and chemical plants.
• It forms the basic raw material in the manufacturing of Portland cement. It also used in production of fertilizer.
• It is utilized in classification of sugar, cooking of paper, bamboos, pulps and rags, bleaching of textile sand leather, besides being used in whitewash.
• It helps in production of bleaching powder, slaked lime, whitening and also used as filler in rubber goods, as extender in paint industry and also in manufacturing of lipstick.

Speciality : The pure white quality of soapstone after grinding to powder is known as ‘French chalk’ in trade. Its production mainly comes from Udaipur, Dungarpur, Bhilwara and jaipur districts of Rajasthan and chittor district of Andhra Pradesh. Especially French chalk is in great demand and India exported it mainly to Kenya, Norway and U.K.

Uses :

• It is mainly used for carving out pots bricks. It is employed as linings for various kinds of stoves, ovens and fireboxes.
• Sawn blocks of soapstone are used in wood pulp and paper mills as lining for the alkali recovery furnaces and kilns and tanks.
• Bricks made from crushed soapstone, bonded with silicates of soda are used for the manufacturing of furnaces in which crude lead is softened.
• Its use in manufacturing of pesticides and for coating calcium ammonium nitrate (fertilizer) has been developed.

Speciality : Barite ore is ground to a range of products of the different sizes needed for the variety of applications. Most commercially available products are 200 or 325 mesh, or finer, down to a few microns. The ore is selected and the process is controlled for one or more of the following properties: color, particle size, specific gravity and bulk density. Some barytes is available in a bleached form to improve color, and there is a precipitated barium sulfate, referred to as “blanc fixe, ” that finds use in high-end paints and coatings and in pharmaceutical applications.

Uses :

• The largest application for barite is as a weighting agent in natural gas and oil field drilling muds. The density of barite helps in down-hole flow and bit lubrication.
• One of its industrial end uses is as a weighting agent additive in cement, rubber and urethane foams. It is used in paint and powder coatings for metal protection and processing improvement. Barite is also used in friction products such as brake pads and clutch surfaces.