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rocks(sometimes organic, no definite crystal structure or chemical comp)…

- - - - fast cooling
      - small crystals
      - lava
      - glassy
      - holes
    - - large crystals
      - many colors
      - magma
- - - - reclamation
    - - reclamation
- - - - organic
        
        limestone
      - chemical
        
        chert
      - clastic
        
        conglomerate
    - - mica
      - garnet
      - quartz
    - - extrusive
        
        obsidian
      - intrusive
        
        granite