Minerals

Mineral Fuels: Coal & Lignite

. Thousands of millions of years of intense heat and natural mineral concentration under extreme pressures

 Natural mineral oval ceylon

 खनिज ईंधन: कोयला एवं लिग्नाइट

Minerals are such physical substances that are extracted from the mine. Name of some useful minerals - iron, asbestos, coal, bauxite (which makes aluminum), salt (salt in Pakistan and many parts of India is extracted from mine!), Zinc, limestone etc.

 Classification of minerals

    Silicate class
    Carbonate class
    Sulfate class
    Halide class
    Oxide class
    Sulfide class
    Phosphate class
    Element class
    Organic ClassMineral definitionTo be mineral, the substance must be rigid and crystalline. According to some definitions, minerals are those that are crystalline and are formed as a result of geographic conditions.Mineral group and concrete mixPhysical properties of mineralsThey are very difficult to classify minerals, however they can be classified on the basis of certain characteristics-

    Optical method
    Chemical or x-ray diffractionPhysical properties are usually used

    To know the crystal structure,
    To know the rigorsMohs Hardness Scale

    1 - Talc Mg3Si4O10 (OH) 2
    2 - Gypsum CaSO4 · 2H2O
    3 - Calcite CaCO3
    4 - fluorite CaF2
    5 - Ca5 (PO4) 3 (Oh, CL F) Apatite
    6 - KAlSi3O8 orthoclase
    7 - Quartz SiO2
    8 - Topaz (Oh, F) Al2SiO4
    9 - Corundum Al2O3
    10 - Diamond C (pure carbon)