Tag: distribution and conservation of mineral resources

Resources that are drawn from nature and used without much modification are called natural resources. The air we breathe, the water in our rivers and lakes, the soils, minerals are all natural resources. 

Non-ferrous minerals are those which do not have iron content in them. For example, copper, bauxite, lead, zinc and gold .

Minerals can be metallic, non- metallic or energy minerals. Metallic minerals are sub-divided into ferrous, non-ferrous and precious minerals. Eg of ferrous minerals: iron ore, manganese. they contain iron in them. examples of non-ferrous: bauxite copper. They do not contain iron. Examples of precious minerals: diamond, platinum. examples of energy minerals: coal, petrol. Examples of non-metallic minerals: mica, limestone.

Chhota Nagpur Palteau has formed in the Pre-Cambrian times and thus made of igneous rocks making it a storehouse of minerals. It is rich in minerals like coal, iron-ore, bauxite, mica, limestone, copper etc

 Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals. 

• A mineral is a solid, naturally occurring combination of inorganic substances. Metallic minerals are minerals which contain one or more metallic elements.
  
• Metallic minerals occur in rare, naturally formed concentrations known as mineral deposits. These deposits can consist of a variety of metallic minerals containing valuable metals such as nickel (pentlandite), copper (chalcopyrite), zinc (sphalerite), lead (galena) and gold (occurs as a native element or as a minor constituent within other minerals) that are used in all aspects of our daily lives.
  
• Metallic minerals must be broken apart and chemically processed to extract the useful metal from the mineral.
  

Natural gas occurs in association with mineral oil. Therefore an oilfield yields natural gas almost invariably. It is mainly composed of methane (95%) with small amounts of propane and ethane.

Metals are the elements. In the options given here only iron is an element rest all are compound or mixture. A metal is one which has shiny appearance, malleable, ductile and hard. Metals are arranged on the left hand side of the periodic table.

The most striking feature of the Indian minerals is their uneven distribution. Some areas are very rich in minerals while some others are completely devoid of this valuable asset.Minerals are rarely found in Northern plains of India.