What is another word for heulandite?
Pronunciation: [hjˈuːlɐndˌa͡ɪt] (IPA) 
Heulandite is a zeolite mineral that is commonly identified by its striking crystal formations. It is a member of the clinoptilolite subgroup and has the chemical formula (Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O. This mineral is found in volcanic rocks and forms from high-temperature hydrothermal fluids. Some synonyms for heulandite include clinoptilolite, stilbite, thomsonite, and chabazite. All of these minerals have similar crystal structures and are often found together in hydrothermal veins. They are commonly used in water purification systems, as they have the ability to absorb heavy metals and other harmful pollutants.
