Mercury: visualization and analysis of crystal structures. Mercury offers a comprehensive range of tools for 3D structure visualization, the exploration of crystal packing and the statistical analysis of CSD search data. Mercury provides an extensive array of options to aid the investigation and analysis of crystal structures. Generate packing diagrams, define and visualise Miller planes, and take a slices through a crystal in any direction. Build and explore networks of intermolecular contacts to gain an understanding of the strengths and weaknesses of structures and identify the key interactions that drive crystal packing