Petrography, mineralogy, litho-geochemistry and study of fluid inclusions in Gheshlaghe Mil gold-copper ore deposit, northwest of Saveh, Iran

Lajouei Kalaki, Maryam Sadat; Akbarpour, Afshin; Tarantola, Alexandre; Hassanpour, Shohreh; Mohammadi, Behzad; Poshtkoohi, Monireh

doi:10.22071/gsj.2020.209775.1728

Document Type : Original Research Paper

Authors

¹ Ms.c., Research Institiute Earth Science,Tehran, Iran

² Assistant Professor, Research Institute for Earth Sciences, Geological Survey of Iran, Tehran, Iran

³ Associate Professor, University of Lorraine, Nancy, France

⁴ Associate Professor, Payame Noor University, Iran

⁵ Ms.c.,Geological Survey of Iran, Tehran, Iran

⁶ Ph.D., Geological Survey of Iran, Tehran, Iran

https://doi.org/10.22071/gsj.2020.209775.1728

Abstract

The Gheshlaghe mil deposit is located in the Urumieh-Dokhtar magmatic belt. Vein- type mineralization is concordance within the rhyodacitic and rhyolite meta-tuff with Eocene age. Alteration zones of sericite, silica, argillic and iron oxides are observed in the investigated area. Primary sulfide minerals of pyrite, fine-grained chalcopyrite and Oxidized specularite and Secondary minerals goethite, limonite, malachite and quartz in Microscopic and field studies have been identified. Based on X-ray diffraction analysis studies minerals such as chlorite, illite, kaolinite, hematite, quartz, mica group and calcite have been observed in the bearing gold veins. According litho-geochemical studies, the gold element has a positive correlation with iron, molybdenum, nickel and lead. A number of 157 fluid inclusion studies in the Gheshlaghe Mil ore mineralization area has been showed mineralization temperature of 99 to 299 °C, rate of salinity ore deposit 1.81 and 12.30 equivalent to the Nacl weight percent. Using Raman laser studies (13 points), the presence of gaseous phases (CO₂, N₂, H₂O) in the fluid inclusions have been demonstrated. Regarding to studies have been done in this area, the Gheshlaghe Mil ore mineralization can to know to a vein type- hydrothermal bearing gold-copper ore deposit.

Keywords

Main Subjects

Economic Geology

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Scientific Quarterly Journal of Geosciences

Petrography, mineralogy, litho-geochemistry and study of fluid inclusions in Gheshlaghe Mil gold-copper ore deposit, northwest of Saveh, Iran

References

References

Volume 31, Issue 2 - Serial Number 120
Volume 31, Issue 2, Serial Number 120, Summer 2021
September 2021
Pages 199-212

Petrography, mineralogy, litho-geochemistry and study of fluid inclusions in Gheshlaghe Mil gold-copper ore deposit, northwest of Saveh, Iran

References

References

Volume 31, Issue 2 - Serial Number 120Volume 31, Issue 2, Serial Number 120, Summer 2021September 2021Pages 199-212

Volume 31, Issue 2 - Serial Number 120
Volume 31, Issue 2, Serial Number 120, Summer 2021
September 2021
Pages 199-212