Clinoptilolite zeolite is the main element of the rock having the same name in which it is present in very high levels (87-80%). Commercially it is customary to distinguish these rocks in: volcanic clinoptilolite and sedimentary clinoptilolite even if the precursor is attributable to a volcanic «glass», in most cases.
Clinoptilolite rocks has a good mechanical and friction resistance which makes them advantageously usable in water purification plants as they do not wear out during the treatment.
It can be used for the abatement of polluting ions (such as NH4) present in waste water. The use of clinoptilolite has been proposed for the purification of waste water containing radioactive ions.
Innovative research has highlighted the possibility of using these raw materials in the production of light aggregates.