Correct Answer - Option 2 : Fe
The correct answer is Fe.
Mineral:
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A mineral is an element or chemical compound that is normally crystalline and that has been formed as a result of geological processes.
- For obtaining a particular metal, first, we look for minerals which are naturally occurring chemical substances in the earth’s crust and are obtained through mining.
- Out of many minerals in which a metal may be found, only a few are viable to be used as a source of that metal.
- Such minerals are known as ores.
Explanation:
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Limonite
- The composition of limonite is 2FeO3.3H2O.
- It is an inferior ore, yellowish in color, and contains 40 to 60 percent iron metal.
- Duda series in Raniganj coalfield, Garhwal in Uttarakhand, Mirzapur in Uttar Pradesh, and Kangra valley of Himachal Pradesh.
- Iron Ore is classified into Haematite, Magnetite, Limonite & Siderite.
- Ores of cobalt are Smelite,Cobaltite,Erythrite.
- The ore of chromium is chromite.
- Ores of tungsten are wolframite, cheelite and ferberite.
Hence, Fe metal contains 'limonite' mineral.
The other ores of Fe are:
Haematite
- It has 60-70 percent metallic content.
- It is Reddish and of the best quality.
- It is found in Dharwad and Cuddapah rock systems of peninsular India.
- 80 percent of haematite reserves are in Odisha, Jharkhand, Chhattisgarh, and Andhra Pradesh.
- In the western section, Karnataka, Maharashtra, and Goa have this kind of ore.
- Hematite ore is the most important industrial iron ore in terms of the quantity used.
Magnetite
- Magnetite is the finest iron ore with a very high content of iron up to 70 percent.
- It has excellent magnetic qualities, especially valuable in the electrical industry.
- It is found in Dharwad and Cuddapah systems.
- Karnataka, Andhra Pradesh, Rajasthan, Tamil Nadu, and Kerala.
Siderite
- It is inferior in quality.
- Contains less than 40 percent iron.
- It contains many impurities.
- mining is not economically variable.
- However, it is self-fluxing due to the presence of lime.