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Minerals

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CBSE: Class 10
CISCE: Class 10

Key Points: Minerals

  • Rocks are made of minerals; some rocks, like limestone, have one mineral, but most contain many minerals in different proportions.
  • Though over 2000 minerals are identified, only a few are common and form most rocks.
  • The properties of minerals (colour, hardness, crystal form, lustre, density) depend on the physical and chemical conditions of their formation.
  • Geographers study minerals for their distribution and economic use, while geologists study their formation, age, and composition.
  • Minerals are classified as metallic and non-metallic; ores are minerals from which metals are extracted (e.g., bauxite → aluminium).
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