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Rocks - Coggle Diagram

- - - - lignite
        
        brown coal
        
        black coal
  - - - the ore of aluminium
    - - dropstone
- - - - grey rock with bigger minerels
    - - light coloured rock rich in quartz
    - - dark coloured rock
  - - - the intrusive part of basalt
    - - the intrusive part of rhyolite
    - - the intrusive part of andesite