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Types of rocks - Coggle Diagram

- - - - browncoal
        
        black coal
- - - - f.e.:Badacsony, Szent GyörgyHill, Giants’ Causeway
    - - f.e.:Mátra, Börzsöny
    - - f.e.:Zempléni Mts
  - - - f.e.:Tatra Mts.
    - - f.e.:Velencei Mts.