Adsorption of Heavy Metals in Contaminated Water Using Zeolite Derived from Agro-Wastes and Clays: A Review

Table 2

Summary of occurrence of some zeolites.

Zeolite mineral	Chemical formula	Occurrence	Reference
Alflarsenite		Syenitic pegmatite (Larvik, Denmark)	[136]
Amicite		Basaltic rock (Howenegg, Germany)	[137]
Analcime		Basalts and phonolites (Catania, Italy)	[138]
Bikitaite		Lithium-rich pegmatites (Bikita, Zimbabwe)	[139]
Boggsite		Porphyritic basalt (Goble Creek, Oregon, USA)	[140]
Brewsterite-Sr		Basalts and schists (Strontian, Scotland)	[141]