This information on bonding and chemical environment can be used for searching through the Materials Project database in the future, answering questions such as "what materials contain Au-S or Ag-S bonds?" -there are 68 and 613, respectively. Or "what is the most common coordination number of Cu in compounds where it is bonded to F?" -it is 6, but 4-and 5-fold coordination also occur in significant numbers. Or "what are the most common coordination numbers for Ce?" -6 is the most common, followed by 8 and 12. Another possible use for this information is to draw statistics of coordination numbers for specific elements across the entire MP database, as shown in Figure .