Petrography and Mineralography of Emarat Lead and Zinc Deposit (South Arak)  

作　　者：Safoura Khani Ahamd Khakzad Mehdi Safari Ali Solgi Safoura Khani;Ahamd Khakzad;Mehdi Safari;Ali Solgi(Department of Geology, Sciences and Research Branch, Islamic Azad University, Tehran, Iran;Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran;Departement of Geology, Payam Noor University, Arak Branch, Arak, Iran)

机构地区：[1]Department of Geology, Sciences and Research Branch, Islamic Azad University, Tehran, Iran [2]Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran [3]Departement of Geology, Payam Noor University, Arak Branch, Arak, Iran

出　　处：《Open Journal of Geology》2016年第6期387-398,共12页地质学期刊（英文）

摘　　要：Iran is host to more than 285 zinc and lead carbonated host deposits including world-class deposits such as Mehdi Abad and Irankouh. Emarat deposit is located in Sanandaj-Sirjan zone and Malayer-Isfahan metallogenic province (northwestern part of Sanandaj-Sirjan tectonic zone). In the area, the mineralization has stratabound shape and restricted to Early Cretaceous limestones and dolomites. With investigation of the optical properties in microscopic survey and evaluation results of analysis, sphalerite, galena, pyrite and chalcopyrite were recognized as the main minerals, covellite, tennantite-tetrahydrite and serosities, quartz and barite as the secondary minerals and gyps, smithsonite were recognized as the minorminerals in the samples. Silicification alteration acted as major process in studied deposit and dolomitization, pyritization and hematitization also were observed in the deposit. Evidences show that mineralization has occurred in post diagenetic stage (epigenetic type) and after tectonic influence.Iran is host to more than 285 zinc and lead carbonated host deposits including world-class deposits such as Mehdi Abad and Irankouh. Emarat deposit is located in Sanandaj-Sirjan zone and Malayer-Isfahan metallogenic province (northwestern part of Sanandaj-Sirjan tectonic zone). In the area, the mineralization has stratabound shape and restricted to Early Cretaceous limestones and dolomites. With investigation of the optical properties in microscopic survey and evaluation results of analysis, sphalerite, galena, pyrite and chalcopyrite were recognized as the main minerals, covellite, tennantite-tetrahydrite and serosities, quartz and barite as the secondary minerals and gyps, smithsonite were recognized as the minorminerals in the samples. Silicification alteration acted as major process in studied deposit and dolomitization, pyritization and hematitization also were observed in the deposit. Evidences show that mineralization has occurred in post diagenetic stage (epigenetic type) and after tectonic influence.

关 键 词：Carbonated Host Deposits Mehdi Abad Irankouh SILICIFICATION ALTERATION Diagenetic Stage 

分 类 号：F42[经济管理—产业经济]