MINERAL AND ENERGY RESOURCES IN INDIA
INDIAN MINERALS AND INDUSTRIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1, 2, 3 and 4
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1, 2 and 3
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3 and 4 only
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1 and 2 only
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Detailed explanation-1: -Notes: Ilmenite, Zirecon and Sillimanite are found in kollam district in Kerala but tungsten is not found in the beach sands of Kerala.
Detailed explanation-2: -Sand dunes of the southern Kerala coast are enriched with six “prescribed substances” viz. ilmenite, rutile, zircon, monazite, leucoxene (brown ilmenite), sillimanite and garnet.
Detailed explanation-3: -Sand forms when rocks break down from weathering and eroding over thousands and even millions of years. Rocks take time to decompose, especially quartz (silica) and feldspar. Often starting thousands of miles from the ocean, rocks slowly travel down rivers and streams, constantly breaking down along the way.
Detailed explanation-4: -Beach sand has different colors because there are many different minerals that make up sand. In California, our sand usually looks white because it has minerals like quartz and pieces of shells that are made of calcium carbonate.
Detailed explanation-5: -The more rocks move and transit, the more they scratch and erode, and the smaller the grains become. As such, differences in sand grain sizes are related to different transition distances and erosion rates. Sand beaches have different colors; white, black, red, pinks, and green.