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http://dx.doi.org/10.22807/KJMP.2021.34.2.147

Fluid Inclusion Study of Quartz Veins in Zogdor Copper Mineralized Area, Southern Mongolia  

Davaasuren, Otgon-Erdene (Convergence Research Center for Development of Mineral Resources (DMR), Korea Institute of Geoscience and Mineral Resources)
Lee, Bum Han (Convergence Research Center for Development of Mineral Resources (DMR), Korea Institute of Geoscience and Mineral Resources)
Kim, Namhoon (Convergence Research Center for Development of Mineral Resources (DMR), Korea Institute of Geoscience and Mineral Resources)
Koh, Sang-Mo (Convergence Research Center for Development of Mineral Resources (DMR), Korea Institute of Geoscience and Mineral Resources)
Yoo, Bong Chul (Convergence Research Center for Development of Mineral Resources (DMR), Korea Institute of Geoscience and Mineral Resources)
Seo, Jung Hun (Department of Energy and Resources Engineering, Inha University)
Publication Information
Korean Journal of Mineralogy and Petrology / v.34, no.2, 2021 , pp. 147-156 More about this Journal
Abstract
We report fluid inclusion study results of copper-bearing quartz veins in Zogdor area, which is located within the Gurvansayhan island arc terrane of Southern Mongolia. At the Zogdor area, structurecontrolled copper mineralization is hosted in granodiorite-porphyry, which emplaced in the late Cretaceous formation. Within this granodiorite porphyry, copper-bearing quartz veins are associated with the hydrothermal alteration that includes quartz-epidote-magnetite, and quartz-magnetite in the propylitic zones. The veins are classified into two types, according to their mineral composition, which occur mainly as chalcopyrite, rare amounts of bornite, magnetite, and pyrite. Fluid inclusions in the quartz veins from the quartz-magnetite±chalcopyrite and quartz-epidote-magnetite veins are two-phase aqueous inclusions having bubble sizes of 5-30 vol.%, evident salinities of 2.0-22.6 wt.% NaCl, and homogenization temperatures of 107-270℃. Based on mineral assemblages of the observed veins, along with the geochemical properties and alteration faces of the host rock, fluid inclusion data show that the study area corresponds to propylitic alteration zone in the porphyry Cu related mineralization.
Keywords
Southern Mongolia; Zogdor; fluid inclusions; quartz vein; porphyry copper mineralization;
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