Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/3192
Title: Geochemical, fluid inclusion and sulfur isotope studies of the Daghkesemen Au-bearing polymetallic deposit (Northwestern Azerbaijan) in Lesser Caucasus: Implications for ore genesis
Authors: Arık, Fetullah
Özen, Yeşim
Bakhshiyev, Akif
Keywords: Geochemistry
Fluid inclusion
Sulfur isotope
Intermediate sulfidation epithermal
Daghkesemen (Azerbaijan)
Lesser Caucasus
Geothermal Systems
Epithermal Deposits
Mineralization
District
Kutahya
Belt
Constraints
Subduction
Mineralogy
Magmatism
Publisher: Pergamon-Elsevier Science Ltd
Abstract: The Daghkesemen Au-bearing polymetallic vein-type deposit, which is the most important ore deposit of the Kazakh graben located in the northwestern part of the Lesser Caucasus, is hosted by calc-alkaline volcanic rocks (andesite, dacite, basaltic trachyandesite, trachyandesite, rhyodacite and their pyroclastics), subvolcanic rocks (andesite porphyry, dolerite, albitophyre/rhyodacite porphyry), and volcanic breccias. The mineralization is commonly observed as gold-bearing quartz-sphalerite-galena-chalcopyrite veins. The Daghkesemen Au-bearing polymetallic deposit, mostly observed in the propylitic alteration, is commonly composed of primarily sphal-erite, galena, chalcopyrite, pyrite, native gold, bornite and magnetite, and secondarily digenite, cerussite, covellite, chalcocite, malachite, azurite, hematite, jarosite, and anglesite. The Daghkesemen Au-bearing poly -metallic deposit mostly comprises Zn, Pb, Cu, Au, Ag, Fe and Cd. Homogenization temperatures (Th) of the fluid inclusions in sphalerite and quartz range from 200.1 ???C to 281.2 ???C and 266.4???266.7 ???C, respectively. The low salinities for the fluid inclusions in sphalerite and quartz show a range of 0.7???6.6 wt % NaCl equivalent and 2.7 to 3.1 wt % NaCl equivalent, respectively. Eutectic temperatures measured in the fluid inclusions vary between-27.4 and-18.2 ???C, indicating H2O???NaCl???KCl system. The ??34SH2S values (-0.8 to -4.4???) of sulfides (chal-copyrite, sphalerite, galena and pyrite) suggest a magmatic-hydrothermal origin for sulfur. The calculated sulfur isotopic geothermometer is value of 190 ???C for sphalerite-chalcopyrite pair. The geochemical, mineralogical, sulfur isotopic and fluid inclusion data of the Daghkesemen Au-bearing polymetallic deposit suggest an inter-mediate sulfidation epithermal deposit associated with volcanic rocks. <comment>Superscript/Subscript Available</comment
URI: https://doi.org/10.1016/j.jafrearsci.2022.104694
https://doi.org/10.1016/j.jafrearsci.2022.104694
https://hdl.handle.net/20.500.13091/3192
ISSN: 1464-343X
1879-1956
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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