Prelims · 3 Physical & World Geography · 3.3 Rocks and geomorphology

3.3.1 Minerals and rocks: common minerals and the rock cycle

A mineral is a natural substance with a definite chemical composition and an orderly atomic structure; rocks are aggregates of minerals, and the rock cycle shows how igneous, sedimentary and metamorphic rocks keep changing into one another.

  • APPSC Group 2 · Prelims
  • Standard level
  • 8 min read
  • Full course

Key terms

  • mineral
  • rock
  • petrology
  • elements of the crust
  • feldspar
  • quartz
  • mica
  • pyroxene
  • amphibole
  • olivine
  • Mohs scale
  • cleavage
  • streak
  • lustre
  • metallic minerals
  • non-metallic minerals
  • mode of occurrence
  • placer deposits
  • rock cycle

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. AP angleStandard
  5. Mains writingMains writing
  6. Common trapsFoundation
  7. Quick revisionFoundation

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