Invited for this month’s cover features the collaboration between four different research groups at Yonsei University, Jilin University, Geophysical Laboratory, and the NanoCentre of the University of South Carolina. The image shows the framework of the small pore zeolite natrolite made up of alternating SiO4 and AlO4 tetrahedral 4-rings and helical 8-rings, which can accommodate, by structural relaxations, diverse alkali, alkaline-earth as well as some heavy metals as charge-balancing extra-framework cations (EFC). Systematic structural changes have now been linked to the spectroscopic data. Read the full text of the article at 10.1002/cplu.201402114