WELCOME TO NATIONAL MINERAL GROUP
EXPERTS IN MINING AND MINERALS
OUR SERVICES
MINING OPERATIONS
Exploration, Extraction, Processing
PRODUCT SHOWCASE
MINERALS MARKETING
Featuring a wide range of stones, minerals, marble, and granite
CUSTOMIZED SOLUTIONS
OUR WORK
Discover our exceptional range of minerals and stones
ABOUT NATIONAL MINERAL GROUP
“At National Mineral Group, we are at the forefront of the mining and minerals sector. Our commitment to sustainable practices ensures we deliver top-tier products to our clients. Our team strives for excellence and innovation in all facets of our operations.”
OUR PRODUCTS
Dolomite Powder
It is produced by crushing dolomite, a crystalline mineral2. Dolomite powder can be used to improve the soil pH and provide nutrients to plants
Potash feldspar
It is an important material for medium and high temperature ceramic glazes2. In ceramics, there are two basic categories of feldspars: potash feldspars (with potassium as the primary melting oxide) and soda feldspars (with sodium as the primary melter oxide)
Limestone
It may contain considerable amounts of magnesium carbonate (dolomite) as well as minor constituents such as clay, iron carbonate, feldspar, pyrite, and quartz1. Limestone forms when minerals such as calcite and aragonite precipitate out of water containing dissolved calcium
Silica
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, commonly found in nature as quartz. In many parts of the world, silica is the major constituent of sand.
China Clay / Kaolin (Powder)
It is predominantly found in regions with a history of volcanic activity, where the intense heat and pressure cause the feldspar mineral to break down and transform into the fine particles of kaolin.
Marble Khanda / Boulder
Marble is a metamorphic rock composed of recrystallized calcite or dolomite, which can be polished and used for sculpture and architecture.
Ball Clay
*CAS #*: 1332-58-7
*Chemical formula*: Al₂O₃2SiO₂2H₂O (main component)
*Functionality*: OH
**TYPICAL CHEMICAL COMPOSITION **: SiO₂ – 53.3-61.2%, Al₂O₃ – 24.3-32.5%, Fe₂O₃ – 1.2-1.7%, TiO₂ – 1-1.1%, CaO – 0.2-0.3%, MgO – 0.2-0.4%, K₂O – 0.3-1.3%, Na₂O – 0.1-0.3%
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*TYPICAL PHYSICAL PROPERTIES*
*Density, g/cm³*: 2.6
*Mohs hardness*: 2-2.5
*Loss on ignition, %*: 9.5-12.6
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*TYPICAL CHEMICAL PROPERTIES*
*Chemical resistance*: reactive with acids and alkalis
*Moisture content, %*: 3
*Adsorbed moisture, %*: 5.5-14.5
*pH of water suspension*:
Quartz
Quartz is one of the most common minerals in the Earth’s crust. As a mineral name, quartz refers to a specific chemical compound (silicon dioxide, or silica, SiO2), having a specific crystalline form (hexagonal). It is found in all forms of rock: igneous, metamorphic and sedimentary. Quartz is physically and chemically resistant to weathering. When quartz-bearing rocks become weathered and eroded, the grains of resistant quartz are concentrated in the soil, in rivers, and on beaches. The white sands typically found in river beds and on beaches are usually composed mainly of quartz, with some white or pink feldspar as well.
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