Survey zeolite occurrences in Iran

Most zeolites in Iran are volcanic type, like rest of the world and their host rocks mainly are andesite and tuff. There are sedimentary zeolite deposits in areas of Sartakht Mountain in Semnan. Type of zeolites in Iran primarily are clinoptilolite and secondly are the type of natrolite, mesolite and analcime. Most zeolite deposits of Iran primarily are of Eocene age and secondly are Oligomiocene age and are of hydrothermal origin. Iran has a very high potential in the field of zeolite deposits and zeolite deposits are widespread in the country. The major occurrences of zeolite in Iran are located in the edge of Semnan,Varamin, Mianeh and Kerman and province of Semnan is the most fertile area of the country in zeolite. Zeolite occurrences mainly are observed in areas of Sartakht mountain in Semnan, Semnan After, Varamin Tallhe, Mianeh (Eshlaq Chay and Ney Bagh), Goud Biyabany in Kerman Bardsir, Shahr Babak, Ghale Asgar in Baft, Moghuyeh in Kerman Sarcheshme, Kerman Rayen, Kerman Kalejak, Firuzkuh Afgar, Rudehen, the village of Maryam (Shahin Dej), Kurd Qeshlaq in Zanjan, Qazvin Avaj, Taleqan Shahrak, Dian Robai in Damghan, Arab Abad in Tabas Deyhuk, Natanz Hasanabad, Zahedan Harmak, , Qom Aliabad, Kahrizak, Gardaneh Nal Shekan in Tehran, Chalus and south Damavand. Si/Al average ratio of the zeolites from the Semnan, Varamin, Mianeh, Kerman, Firuzkuh and Rudehen is 0.60. Average values of Na and Ca in mentioned zeolites are 11.13 and 1.93, respectively, therefore zeolites was formed by lake saline fluids.