Volume 57 of Reviews in Mineralogy and Geochemistry highlights the present knowledge on micro-
and mesoporous mineral phases with focus on their crystal-chemical aspects occurrence and
porous activity in nature and experiments. As zeolites are the matter of numerous ad hoc
meetings and books - including two volumes in this series - they do not specifically appear in
the present volume. The phases of the sodalite and cancrinite-davyne groups which
mineralogists consider distinct from zeolites are instead considered (in the order chapter 7
by W. Depmeier and part of chapter 8 by E. Bonaccorsi and S. Merlino respectively).
