Here is a simple definition... Zeolites are natural volcanic material. They are originally found deep in the earth in a molten state. When a volcano erupts lava cascades down into the ocean. Over a period of thousands of years zeolite is then formed as the alkaline sea water hits the hardened lava. Zeolite is one of the few minerals which is negatively charged. There are several toxic substances and heavy metals such as herbicides, pesticides, mercury and lead to name a few which are positively charged. Zeolite attracts toxins with a positive charge and cages them, then quietly eliminates them from the body. Zeolites negative charge and cage like structure make it an excellent and safe tool for detoxifying our body.