Before learning about the different types of minerals, we must first understand what are minerals. While, minerals are an important part of our everyday life and make up most of the earth they are defined as naturally occurring substances that have a crystalline structure. They are formed by geological processes and are usually inorganic and solid in nature. There are also few organic materials, like silver, gold, diamond etc in the earth’s crust. Today, there are more than thousands of minerals recognized but only some of them are common.
Types of Minerals
Minerals are classified based on their crystal form and chemistry. Minerals are divided into two types namely metallic and non-metallic.
Metallic minerals exhibit lustre in their appearance and consist of metals in their chemical composition. These minerals serve as a potential source of metal and can be extracted through mining. Examples of metallic minerals are Manganese, iron ore and bauxite are Metallic minerals and be divided into ferrous and non-ferrous metallic minerals.
Ferrous minerals are one that contains iron and nonferrous are one that does not contain iron.
Non-metallic minerals are minerals which either show a non-metallic lustre or shine in their appearance. Extractable metals are not present in their chemical composition. Limestone, gypsum and mica are the examples of non-metallic minerals.
- Bauxite ore mostly exists in deeply weathered rocks. Volcanic rocks contain bauxite deposits in some regions.
- Iron metalis extracted from iron ore. It never exists in pure form and has to be extracted from iron ore by eliminating the impurities.
- Gold is the oldest and most precious element to be known.
- Manganese ore is a silvery brittle or grey-white metallic ore, occurs in many forms and found worldwide.
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