Megaimpex visakhapatnam, Andhra Pradesh

Dolomite is a common rock-forming mineral. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Limestone that contains some dolomite is known as dolomitic limestone.It is rarely found in modern sedimentary environments but dolostones are very common in the rock record. They can be geographically extensive and hundreds to thousands of feet thick. Most rocks that are rich in dolomite were originally deposited as calcium carbonate muds that were post-depositionally altered by magnesium-rich pore water to form dolomite.It is a double carbonate of calcium and magnesium (CaCO3, MgCO3). It is one of the important raw materials used in the iron and steel, ferro-alloys, glass, alloy steels, fertilizer industry, etc. Dolomite chips are also used in flooring tiles.Dolomite has a  hardness  of 3 1/2 to 4 on  Mohs hardness scale  and is sometimes found in rhombohedral crystals with curved faces.It is very similar to the mineral calcite. Calcite is composed of calcium carbonate (CaCO3) while dolomite is a calcium magnesium carbonate (CaMg(CO3)2). These two minerals are one of the most common pairs to present a mineral identification challenge in the field or classroom. The best way to tell these minerals apart is to consider their hardness and acid reaction. Calcite has a hardness of 3 while dolomite is slightly harder at 3 1/2 to 4. Calcite is also strongly reactive with cold hydrochloric acid, while dolomite will effervesce weakly with cold hydrochloric acid.It is a  Calcium magnesium carbonate  with a chemical composition of  CaMg(CO3)2.  Synonyms  includes Marble, Limestone, dolostone etc.   SILENT FEATURES Dolomite Chemical Properties/Composition : CaCO3 : 56.5%MgCO3 : 43.0%CaO : 31.5%MgO : 20.5%Fe2O3 : 0.5%SiO2 : 1.5%Al2O3 : 0.5%  Dolomite Physical Properties : Appearance : White Crystalline Powder.Sp. gravity : 2.6 – 2.8Oil absorption : 12 to 14Volatile content : Max. 0.5%PH of 10% slurry : 8.5 to 9.0Coarse Particles : Max. 0.5%   DOLOMITE INDUSTRIAL APPLICATIONS & USES : Paints :  Used widely in cement paints, exterior paints, primers, putties, powder coatings and industrial finishes. Plastic :  Used in PVC footwear, PVC pipes, cables and others. Paper :  Used as integral filler in paper to give smoothness and gloss. Adhesives :  Used in adhesives and carpet backing. Rubber :  It is used in toothpaste, cosmetic and soap industry. Glass :  High-grade dolomite with as low content as possible is required by the glass industry. Glass grade dolomite is typified by its purity and consistency. Fertilizer :  Dolomite for use in fertilizer industry must have CaCO3 + MgCO3 90% (min.) and SiO2 5% max.

Quartz is a chemical compound consisting of one-part silicon and two parts oxygen. It is the most abundant mineral found at Earth’s surface and its unique properties make it one of the most useful natural substances. Quartz is the second most common mineral in the Earth’s continental crust. It is made up of a lattice of silica (SiO2) tetrahedral.It goes by an array of different names. The most important distinction between types of quartz is that of macro crystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification). Quartz is also known as a ubiquitous mineral with an enormous number of uses.Quartz Processing (Silicon dioxide, SiO2) At a share of approx.

China Clay is a white, soft, plastic clay mainly composed of fine-grained plate-like particles. Kaolin is formed when the anhydrous aluminium silicates which are found in feldspar rich rocks, like granite, are altered by weathering or hydrothermal processes. The process which converted the hard granite into the soft matrix found in kaolin pits is known as “kaolinisation”. The quartz and mica of the granite remain relatively unchanged whilst the feldspar is transformed into Kaolinite.It is a layered silicate mineral, with one tetrahedral sheet linked through oxygen atoms to one octahedral sheet of alumina octahedra. Rocks that are rich in Kaolinite are known as kaolin or china clay. Kaolinite is a mineral belonging to the group of alumino-silicates. It is commonly referred to as “China Clay” because it was first discovered at Kao-Lin, in China. The term kaolin is used to describe a group of relatively common clay minerals dominated by Kaolinite and derived primarily from the alteration of alkali feldspar and micas.China clay is an industrial mineral used primarily as an inert filler and it is combine with other raw materials in a wide variety of applications. Kaolin is a white, soft, plastic clay mainly composed of fine-grained plate-like particles. Kaolin is formed when the anhydrous aluminium silicates which are found in feldspar rich rocks, like granite, are altered by weathering or hydrothermal processes.

• MaterialCrystal
• PatternPlain
• ColorTransparent
• ApplicationDecoration
• TypeNatural
• AppearanceAntique
• FinishShinny