Mineral and Power Resources
Minerals are the naturally occurring homogenous elements having a definite chemical composition and specific physical properties. They are the sources of different types of metals. They are formed in different types of geological environments. Graphite is one of the softest minerals on the earth. Diamond is the hardest known mineral. Minerals can be classified into metallic minerals and non-metallic minerals. Metallic minerals can further be classified into ferrous and non-ferrous minerals.
Minerals with high percentage of iron metal are ferrous minerals. Examples are Iron ore, manganese, chromites, etc. Non-ferrous minerals do not contain iron, but may contain some other metals such as gold, silver, copper or lead. Examples: Zinc, bauxite, etc.
Mining is the digging out of the minerals buried under the interior layers of the earth. It is the extraction of valuable minerals or other geological materials from the earth, usually from an ore. The various types of mining are open cast mining, shaft mining, drilling and quarrying.
Minerals are found in different types of rocks. They are found in igneous, metamorphic and sedimentary rocks. Metallic minerals are found in igneous and metamorphic rock. Sedimentary rocks contain non-metallic minerals.
Power resources are geological resources used to generate power. They play a vital role in our lives. They can be classified into:
Conventional Sources of Energy, and
Non-Conventional Sources of Energy
Conventional sources include most of the non-renewable resources whereas the non-conventional sources include most of the renewable resources.
Non-renewable resources are those resources, which cannot be renewed once they are finished. Ex – Coal, petroleum, etc.
Renewable resources are those resources, which can be renewed time and again. Ex – Solar energy, wind energy, etc.