COLLECTORS’ INFORMATION: Collectors acquire dolomite because of the rarity of well-developed crystals; interesting mineralogical associations; and unusual, curved crystal faces. Calcite has a hardness of 3, while dolomite is slightly harder at 3 1/2 to 4. It is a calcium magnesium carbonate with a chemical composition of CaMg(CO3)2. The physical properties of dolomite that are useful for identification are presented in the table on this page. Grid Type Ball Mill. It is a calcium magnesium carbonate with a chemical composition of CaMg(CO3)2. Iron ore normally contain gangue materials such asSiO2, Al2O3 along with S and P. Removal of these impurities is done by combining the gangue materials with CaO and / or MgO to form slag which consists of low melting point complex compounds such as calcium silicate, calcium aluminate etc. When small amounts of iron are present, the dolomite has a yellowish to brownish color. The chemical composition of dolomite varies from source to source, but it generally contains 30 wt.% CaO, 21 wt.% MgO, and 45 wt.% CO 2. Dolomite available in our mines is of superior grade with silica content less than 2% and magnesium content up to 20%. Dolomite also forms as sediments in ore veins such as limestone. (* The uncommon exceptions being raw adamantine ore, adamantine metal, and, because it cannot be melted, slade.) It occurs as a replacement deposit in limestone affected by magnesium-bearing solutions, in talc schists, and in other magnesium-rich metamorphic rocks. [13] However, when it is coarsely crystalline the cleavage angles can easily be observed with a hand lens. Dolomite is a natural stone with double carbonate of calcium and magnesium having composition (CaCO3. It is used for acid neutralization in the chemical industry, in stream restoration projects, and as a soil conditioner. An alternative name sometimes used for the dolomitic rock type is dolostone. Desulfovibrio brasiliensis). Dolomite is a common sedimentary rock-forming mineral that can be found in massive beds known as dolomites. Dolomite is also used as the substrate in marine (saltwater) aquariums to help buffer changes in the pH of the water. ore making machine in dolomite good performance. Dolomite is used as a source of magnesia (MgO), a feed additive for livestock, a sintering agent and flux in metal processing, and as an ingredient in the production of glass, bricks, and ceramics. Limestone that contains some dolomite is known as dolomitic limestone. Hydraulic Motor Driving Center Thickener. In a filing to BSE, NMDC said it has increased the price of lumps or high-grade iron ore by Rs 300 to Rs 2,950 per tonne, and that of iron ore fines or inferior grade ore by Rs 300 to Rs 2,660 a tonne. The most important use of Dolomite is to produce magnesium, it is an important petroleum reservoir rock and serves as the host … of zebra dolomite in carbonate platform rocks of the Great Basin and their relation to one another and to contemporaneous and subsequent ore deposits. Dolomite also contains small amounts of chlorine, phosphorus, potassium, and more than 20 other trace elements.Dolomite 2005 Dolomite, also known as \"dolostone\" and \"dolomite rock,\" is a sedimentary rock composed primarily of the mineral dolomite, CaMg(CO3)2. In these veins it often occurs as rhombohedral crystals which sometimes have curved faces. It is also found in altered, silica-poor igneous rocks, in some carbonatites, and in serpentinites. These solutions react with the dolomite, which causes a drop in pH that triggers the precipitation of metals from solution. It is a double carbonate of calcium and magnesium (CaCO3.MgCO3). These products are available in market at most economical rates. Dolomite aggregate: Dolostone, used for asphalt paving from Penfield, New York. Efficient Thickener. In industry, dolomite is an important source for magnesium and calcium metals, and is used as a flux for metallurgy. Dolomite is an important ore of magnesium and magnesium compounds; dolomite rock is quarried as a dimensional stone, cement aggregate, and road-fill material. A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives the carbonate back. People take dolomite as a calcium and magnesium supplement. The phosphate ore flotation is achieved through the surface electrical behavior difference among apatite, dolomite and quartz, but it is usually affected by the dissolved ions from pulp, especially Ca2+ and Mg2+. ) 2 ) ] small amounts of manganese unit jjinteriors.in in sedimentary.... Limestone where dolomite is slightly harder at 3 1/2 to 4 Aug, 2020, at 16:12 microbial surfaces! 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