define mineral. elucidate the method of extraction of mineral.
Answers
The process of taking out minerals from rocks buried under the earth's surface is called mining. ... Open-cast mining, also known as open-pit mining and open-cut mining, refers to a method of extracting rock or minerals from the earth by their removal from an open pit or borrow.
What is mineral?
Mineral is a naturally occurring substance that has a definite chemical composition.
☆ Example: Salt, graphite, quartz, mica, etc.
Minerals are generally classified as metallic and non metallic minerals based on their composition.
Metallic minerals are further classified as Ferrous and non ferrous.
Elucidate the method of extraction of mineral.
Minerals can be extracted by mining, drilling or quarrying.
☆ The process of taking out minerals from rocks buried under the earth's surface is known as mining.
☆ Minerals that lie at shallow depths are taken out by removing the surface layer, this process is known as open-cast mining.
☆ Deep bores called shafts are made to reach minerals that lie at great depths. This is called shaft mining.
☆ Deep wells are bored to take petroleum and natural gas out through the process of drilling.
☆ Minerals that lie near the surface are simply dug out through the process of quarrying.