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Ebrahimi M, Karimpour , M H, Mazloumi Bejstani3 A. Geology, geochemistry and mineralogy of alteration zone and mineral occurrence in Kalateh Bargh copper prospect area, northwest of Bardaskan. www.ijcm.ir 2024; 32 (2) :227-242
URL: http://ijcm.ir/article-1-1865-en.html
URL: http://ijcm.ir/article-1-1865-en.html
1- Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
2- Department of Geology and Research Center for Ore Deposit of Eastern Iran, Faculty of Science, Ferdowsi University of Mashhad, Mashhad & Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
3- Department of Geology, Payam Noor University of Mashhad, Mashhad, Iran
2- Department of Geology and Research Center for Ore Deposit of Eastern Iran, Faculty of Science, Ferdowsi University of Mashhad, Mashhad & Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
3- Department of Geology, Payam Noor University of Mashhad, Mashhad, Iran
Abstract: (1089 Views)
The Kalateh Bargh prospect area is located NW of Bardaskan, Khorasan Razavi province. Geology of the erea includes sequence of Eocene volcanic rocks with basalt composition and trachyandesite and andesite. On this sequence, there is a conglomerate unit that its fragments are mainly composed of volcanic rocks. The high porosity of the conglomerate as the host rock provided a suitable space for the formation of Manto copper deposits. Mineralization has formed in conglomerate unit as a particular horizon in the Kalate Barq area. Primary minerals include chalcocite and minor bornite and secondary minerals consist of malachite and covellite. Structure and texture of mineralization are veinlet, open-space filling, disseminated and replacement. Mineralogy of alteration zones is related to mineralization and consist of chlorite and calcite. The average copper geochemical anomaly in surface samples is 1.4 %. The presence of chalcocite and absence or low amount of iron sulfide minerals, the presence of chlorite and calcite as the main gangue minerals and lack of quartz indicate that ore solution is reduced and poor of iron and silica. Based on lithology, alteration, mineralogy and geochemistry of Kalateh Bargh prospect area is similar to manto-type copper deposits.
Keywords: Mineralogy, chalcocite, conglomerate, geochemistry, stratabound, manto-type copper, Bardaskan
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