Sc 4.1

• Various mineral in the Earth's crust

  Mineral are solid elements or compound that are naturally found in the Earth's crust

  Mineral in the form of elements like gold and silver exist freely in the Earth's crust

  Mineral in the form of compounds, like bauxite (aluminium oxide) and galena, consists of combination of a few types of different elements
• Example of elements in earth crust

  1. Gold (Au)
  2. Diamond
  3. Silver (Ag)
• Natural Compound

  Oxide

  1. Bauxite
  2. Aluminium oxide
  3. Hematite
  4. Iron oxide
  5. Magnetite
  6. Magnesium oxide
  7. Cassiterite
  8. Tin oxide
  9. Quartz
  10. Silicon dioxide
• Natural Compound

  Sulphide

  1. Galena
  2. Lead (II) sulphide
  3. Pyrite
  4. Iron sulphide
  5. Chalcocite
  6. Copper sulphide
  7. Blend
  8. Zinc sulphide
• Natural Compound

  Carbonate

  1. Calcite
  2. Calcium carbonate (calcium, carbon, oxygen)
  3. Magnetite
  4. Magnesium carbonate
• Natural Compound

  Silicate

  1. Clay
  2. Aluminium silicate (Silicon, oxygen)
  3. Slag
  4. Calcium cilicate
  5. Liquid glass
  6. Potassium silicate