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  Economic Geology
Perlite and Pumice
Title book : Perlite and Pumice
Author : Mansour Qorbani
Publisher date : February 2000
Description : Perlite is a volcanic glass which is recognized in 3rd centuries B.C. Details about perlite discovery is ruined during time and there are some different ideas about re-exploration of perlite as a business material.
The history of economic geology of Iran
Title book : The history of economic geology of Iran
Author : Mansour ghorbani
Publisher date : July 2002
Description : Human has always used crust materials for removing life needs and accessing to more welfare. Based on archaeological studies Au is first metal which is gartered by rivers with purity and copper is first metal that human can melt that. About date of using copper, some contradicted ideas are seen about that.
Description of  salt -  potash and them spread in Iran
Title book : Description of salt - potash and them spread in Iran
Author : Farideh Helmi
Publisher date : August 2000
Description : English word of salt which is derived from Latin Word of salt and halite is derived from halus which is said sea in Greece language. Salt was used for human from for past as Chinese people identified salt from 3,000 years ago.
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