Minerals and Ores

Steel production requires iron ore as the primary mineral, coal as both fuel and reducing agent, and manganese as a key alloying element that improves strength, hardness, and removes impurities like sulfur. While limestone is crucial in steelmaking as a flux to remove silica impurities, the question specifically asks for minerals used 'in' steel - meaning the final product composition, where manganese is an essential alloying mineral.

This is the correct answer. Cement is a mixture of non-metallic minerals.

Magnesium, iron and silica are major elements of olivine. It is used in jewellery.

Mica is an alumino-silicate mineral group widely used in electrical insulation due to its excellent dielectric properties, heat resistance, and ability to be split into thin sheets. Bauxite is an aluminum ore, chromites are chromium ores used for metal production, and manganese is a metallic element.

Fe3O4 is the chemical formula for Magnetite, a magnetic iron oxide. Hematite is Fe2O3, and Stone/Clay are not specific iron oxides.

Monazite sand is the primary commercial source of thorium, containing thorium oxide along with rare earth elements. Ilmenite is a titanium ore, pitchblende (uraninite) is a uranium ore, and galena is a lead ore.

Monazite sand is the primary commercial source of thorium, containing thorium phosphate along with rare earth elements. Ilmenite is primarily titanium ore, pitchblende (uraninite) is uranium ore, and galena is lead sulfide (PbS). Monazite deposits are found in beach sands and certain rock formations.

The minerals deposits in Chhatisgarh are Bauxite (96 million ton), Dolomite (606 million ton) and Iron ore (2336 million ton). Tin is not found in Chhatisgarh.

Iron, copper, gold and silver are metallic minerals.

Magnetite contains 70% of iron.

Bailadila range in the belt of Madhya Pradesh and Chattisgarh is situated in Bastar district is the largest mechanised mine in Asia.

The amount of haemetite found in India is 75% and it is the most abundant iron ore found in India.

North eastern region includes Odisha and Jharkhand. The reserves are about 19% and the production is about 33%. Central region includes Madhya Pradesh and North Maharashtra. The reserves are about 15% and the production is about 39%. The peninsular plateau region includes Karnataka, Andhra Pradesh, Goa and South Maharashtra.The reserves are about 45% and the production is 30%.

North eastern plateau region includes chhotanagpur (jharkhand), odisha plateau, west bengal and parts of chattisgarh. North western region includes aravali in rajasthan and parts of gujarat. South western plateau includes karnataka, tamil nadu uplands and kerala.