Question

decsribe the major ironore belt​

Answer 1

Explanation:

The three major iron ore belts of India are: Orissa Jharkhand belt. Durga Bastar Chandrapur belt. Bellary-Chitradurga-Chikmaglur-Tumkur belt in Karnataka.

Answer 2

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Mineral Resources

Minerals

A homogenous, naturally occurring substance with definable internal structure is called mineral.

Types of Minerals

1. Metallic

• Ferrous (containing iron): Iron ore, manganese, nickel, cobalt, etc.
• Ferrous (containing iron): Iron ore, manganese, nickel, cobalt, etc.Non-ferrous: Copper, lead, tin, bauxite, etc.
• Ferrous (containing iron): Iron ore, manganese, nickel, cobalt, etc.Non-ferrous: Copper, lead, tin, bauxite, etc.Precious: Gold, silver, platinum, etc.

2. Non-metallic: Mica, salt, potash, sulphur, granite, limestone, marble, sandstone, etc.

3. Energy Minerals: Coal, petroleum and natural gas

Mode of occurrence of minerals:

1. In igneous and metamorphic rocks: The smaller occurrences are called veins and the larger occurrences are called lodes. They are usually formed when minerals in liquid/molten and gaseous forms are forced upwards through cavities towards the earth’s surface. Examples: tin, copper, zinc, lead, etc.
2. In sedimentary rocks: In these rocks, minerals occur in beds or layers. Coal, iron ore, gypsum, potash salt and sodium salt are the minerals found in sedimentary rocks.
3. Decomposition of surface rocks and removal of soluble constituents leaves a residual mass of weathered material which contains ores. Bauxite is formed in this way.
4. As alluvial deposits: These minerals are found in sands of valley floors and the base of hills. These deposits are called placer deposits. They generally contain those minerals which are not corroded by water. Examples; gold, silver, tin, platinum, etc.
5. In ocean water: Most of the minerals in ocean water are too widely diffused to be of economic importance. But common salt, magnesium and bromine are mainly derived from ocean waters

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