T2 GEOGRAPHY CH1 Resources — Social Science STD 7 — Question

Non-metallic resources do not comprise of any metals.
They are good conductors of heat and electricity.
Example: mica, limestone, gypsum, dolomite, phosphate etc.

• Mica:

1. Muscovite and Biotite are the common ores of Mica.
2. It is used in electrical and electronics industry and used for making lubricating oils and decorative wallpapers.
3. China, Russia, Finland, USA, Turkey and Korea are the leading producers of mica.

• Limestone:

1. Limestone is a sedimentary rock composed by skeletal fragments of marine organisms.
2. It is used for facing stone, floor tiles, stair treads, windows sills.
3. It is also used in smelting and metal refining process and portland cement production.
4. China, USA, India, Russia, Brazil and Japan are the leading producers of limestone. Tamil Nadu produce over 3/4 of total limestone in India.