minerals meaning in hindi

 Hello guys today we will discuss about minerals and its occurence  so without wasting your time let get start 

So firstly we will know about minerals so what is minerals?? A homogeneous , naturally occurring substance with a definable internal structure is called minerals. Rocks are the combination of minerals. Some rocks consist of single minerals,  but most of them consist of several minerals in different quantity.          The formation of minerals depend upon physical and chemical condition that in turn results in a wide range of colours,  hardness , crystal form , lustre and density of a particular mineral . Minerals are found in varied forms in nature , ranging from the hardest diamond to the softest talc.   For better understanding of earth's landforms geographers study material as part of earth's crust.  Geologist study or research the minerals as part of earth's crust Geologist research about the formation , age and composition physicals and chemical properties of minerals.     Minerals of daily use are made up of minerals like toothpaste contain limestone , silica , phosphate , e.t.c. minerals are needed by our body too and are also the basis of all economic activities . They are also studied to know the formation is and composition of Earth.       

Occurrence of minerals 

After discussing about minerals we should also know that how we Occur the minerals so let get start minerals are usually found in ores  an ore is a naturally occurring material having one or more minerals in sufficient concentration so that their extraction is done successfully minerals generally occur in the following forms.   Veins and Lodes in igneous and Metamorphic rock minerals occur in cracks grievances faults or joints smaller occurrence are card Venice and longer are card loaders days when is are loaders are formed when minerals in liquid more 10 and gaseous form are forced upward through cavities toward the Earth surface their cool and solidify when they reach the earth surface and fill in the cracks and crevices parts or joints metallic mineral like tin copper zinc and lead are obtained from it.

Beds o

r layers -- In sedimentary rocks,  minerals occure in the form of beds or layers dur to deposition , accumulation and concentration in horizontal layers of the rock . Coal , some forms of iron ore , gypsum,  potash salt and sodium salt are also found in these beds or layers . These minerals except coal and iron ore are formed due to evaporation , especially,  in arid region.         

Decomposition of surface rocks --  When Decomposition of surface rocks and the removal of soluble constituents takes place , it leaves a residual mass of weathered material containing minerals ore . Bauxite is for.ed by the Decomposition of surface rocks . 

Alluvial deposits-- Some minerals are found in sands of valley floors and at the base of hills . There are not corroded by water,e.g. gold, silver, tin.

Ocean waters -- These contain many minerals.  Common salt magnesium and bromine are derived from oceanic waters , whereas manganese nodules occure in ocean beds . 

Distribute of minerals-- In India , there are formed large varitions in occurence of minerals. The distribution of minerals in India is--         Peninsular Plateau-- Peninsular Plateau rocks contain most of the reserve of coal , metallic minerals,  mica , non ferrous minerals and non metallic minerals.        Gujrat and Assam --  Sedimentary rocks on the Western and Eastern flanks of the Peninsular which are found in Gujrat and Assam have most of the petroleum deposits.                Rajasthan-- Rajasthan with the rock system of the Peninsula has many reserve of non ferrous minerals.     Northern Plains-- There is very little or no minerals of economic value in vast alluvial Plains of the North India.

Rat hole mining -- It is rhe type of mining that is done by diging long narrow tunnels to reach the coal deposits under the ground.  It is practiced in Jowai and Cherapunjee .    The practice of rat hole mining is declared illegal by national green tribunal . But in most of tribal areas of North East India , minerals are owned by individuals or communities.  In meghalaya,  there are large deposits of coal , iron ore , lime stone and dolomite , e.t.c. rat hole mining is done here . 

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By -- SATYAM MISHRA