Natural Zeolites: Crystal-chemistry, Occurrence, Properties and Utilizations

The first zeolites discovered were natural zeolites, more than 250 years ago. The current estimated world mine production of natural zeolites ranges between 3–4 Mt per year. This chapter provides an overview about the complex world of natural zeolites, with a journey through their crystal-chemistry, occurrence in Nature, principal properties (i.e., cation exchange capacity and molecular sieve ability, behaviour at non-ambient conditions), and their principal applications (i.e., in water and wastewater treatment, agronomy and environmental soil remediation, building industry).