1- University of Zanjan
2- University of Zanjan ,gh.nabatian@znu.ac.ir
3- Institute for Advanced Studies in Basic Sciences (IASBS)
2- University of Zanjan ,
3- Institute for Advanced Studies in Basic Sciences (IASBS)
Abstract: (25 Views)
The Kordkandi deposit is located 26 km northwest of Zanjan, within the Western Alborz-Azarbaijan zone and the Tarom subzone, occurring as a stratabound mineralization within Eocene andesitic basalt lava flow units (equivalent to the Karaj Formation). Copper mineralization in this deposit is primarily observed as sulfide minerals including chalcopyrite, bornite, chalcocite, and lesser pyrite and specular hematite exhibiting disseminated, vein-veinlet, and replacement textures. The volcanic rocks in this area were formed in an extensional, back-arc environment. Geochemically, the investigated samples fall within the calc-alkaline to high-potassium calc-alkaline to shoshonitic series. Based on the host rock characteristics, mineralogy, texture and structure, geometry, and alteration, this deposit shows significant similarity to Manto-type deposits in Chile. According to these lines of evidence, it can be stated that the Kordkandi copper deposit formed during burial metamorphism stages within andesitic basalt units. During this stage, with increasing burial depth, copper mineralization occurred alongside alterations such as zeolitization, chloritization, epidotization, silicification, and carbonatization. Subsequently, due to the uplift of the area and through weathering and supergene processes, secondary minerals were formed in this deposit.
Type of Study: Original Research |
Subject:
Economic Geology
Received: 2026/04/6 | Accepted: 2026/06/21
Received: 2026/04/6 | Accepted: 2026/06/21
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