For a general overview of natrolite, let us refer to the Gem Rock web site, a site specific to collectors of minerals. "Is natrolite rare? As a mineral, it's common". Let us add that natrolite is present on Mars too; the mineral has been detected by means of the Perseverance rover data . "In terms of properties, natrolite is both pyroelectric and piezoelectric". "Industrially, what is natrolite used for? As a zeolite mineral, natrolite can be used for ion exchange, gas separation, and catalysis. In fact, natrolite was one of the first zeolites used for ion exchange (meaning magnesium, potassium, sodium, and calcium replace one another when dissolved)" (Gem Rock). "As such, natrolite can be used in chemical filters, water & air purifiers, water softeners, detergents, pet litter, animal feed, wastewater treatment, molecular sieves, soil conditioners". "Natrolite and mesolite are orthorhombic, while scolecite is monoclinic" (Gem Rock).