Which one of the following is a non-metallic mineral ?
Iron
Mica
Copper
Bauxite
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This question was previously asked in
UPSC NDA-2 – 2019
Minerals are broadly classified into metallic and non-metallic minerals. Metallic minerals contain one or more metallic elements, while non-metallic minerals do not. Iron, Copper, and Bauxite (an ore of aluminum) are metallic minerals. Mica is a silicate mineral that does not contain metallic elements and is classified as a non-metallic mineral.
Metallic minerals are sources of metals (e.g., iron ore, copper ore, bauxite), while non-metallic minerals are used for various purposes other than obtaining metals (e.g., building materials, chemicals, fertilizers, gemstones).