Mineral and Energy Resources - PDF
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This document from Contemporary India discusses rock and non-metallic minerals such as mica and limestone, including where they are found and how they are produced. It also describes the hazards of mining operations and their impact on both the environment and the health of miners, including air and water pollution.
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Rock Minerals Limestone is found in association with rocks After the discovery of aluminium composed of calcium carbonates or calcium Emperor Napoleon III wore buttons and and magnesium carbonates. It is...
Rock Minerals Limestone is found in association with rocks After the discovery of aluminium composed of calcium carbonates or calcium Emperor Napoleon III wore buttons and and magnesium carbonates. It is found in hooks on his clothes made of aluminium sedimentary rocks of most geological and served food to his more illustrious formations. Limestone is the basic raw guests in aluminium utensils and the material for the cement industry and less honourable ones were served in gold essential for smelting iron ore in the blast and silver utensils. Thirty years after this furnace. incident aluminium bowls were most common with the beggars in Paris. Dig a little deeper: Study the maps to explain why Chota Nagpur is a storehouse of minerals. Non-Metallic Minerals Mica is a mineral made up of a series of plates or leaves. It splits easily into thin sheets. These sheets can be so thin that a thousand can be layered into a mica sheet of a few centimeters high. Mica can be clear, black, green, red yellow or brown. Due to its excellent di-electric strength, low power loss factor, insulating properties and resistance to high voltage, mica is one of the most indispensable minerals used in electric and electronic industries. Mica deposits are found in the northern edge of the Chota Nagpur plateau. Koderma Gaya – Hazaribagh belt of Jharkhand is the leading producer. In Rajasthan, the major mica producing Fig. 5.7: Production of Limestone showing area is around Ajmer. Nellore mica belt of state-wise share in per cent, 2018–19 Andhra Pradesh is also an important producer in the country. Hazards of Mining Have you ever wondered about the efforts the miners make in making life comfortable for you? What are the impacts of mining on the health of the miners and the environment? The dust and noxious fumes inhaled by miners make them vulnerable to pulmonary diseases. The risk of collapsing mine roofs, inundation and fires in coalmines are a constant threat to miners. The water sources in the region get contaminated due to mining. Dumping of waste and slurry leads to degradation of land, soil, Fig. 5.8: Air pollution due to and increase in stream and river pollution. generation of dust in mining areas 48 CONTEMPORARY INDIA – II Reprint 2024-25
