mineralogy

/ˌmɪnəˈrɑlədʒi/
noun
  1. The scientific study of minerals, including their composition, structure, and properties.
    • Mineralogy helps us understand how gems like diamonds and rubies form.
    • She decided to major in mineralogy after finding a beautiful quartz crystal.
    • The textbook on mineralogy covers over 200 different types of minerals.