Investigation of Mazraeh Skarn mineralization, North of Ahar, with an emphasis on fluid inclusion studies

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Gharesi Mehdi; RASA IRAJ; YAZDI MOHAMMAD

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2018 | Volume:26 | Issue:1 Page(s): 229-244

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Information Journal Paper

Title

Investigation of Mazraeh Skarn mineralization, North of Ahar, with an emphasis on fluid inclusion studies

Author(s)

Gharesi Mehdi | RASA IRAJ | YAZDI MOHAMMAD | Issue Writer Certificate

Keywords

Western Alborz-lesser Caucasus metallogenic beltQ1

Mazraeh depositQ1

skarnQ2

fluid inclusionsQ2

microthermometryQ1

Abstract

The emplacement of Oligo-Miocene age Sheyvardagh intrusive body within the older carbonate and volcanoclastic rocks is responsible for contact metamorphism and creating of Mazraeh deposit in epidote-garnet exoskarn of Western Alborz-lesser Caucasus metallogenic belt. Mineralogical paragenesis consist of magnetite, pyrite, chalcopyrite, bornite, covellite, hematite, goethite and malachite and main mineralization stage occurs in retrograde skarn phase. Trace element analysis show the effects of meteoric fluids on intrusive body during the skarnification. Two types of fluid inclusions were identified in quartz and calcite minerals of retrograde skarn stage. (L) type is recognize with low-medium salinity and low homogenization temperature range (120-356° ) and (L埤 ( type is identified in high salinity and slightly higher homogenization temperature range (227-375° ). Both of inclusion types entrapped in retrograde skarn stage. (L) inclusions originated from metamorphic fluids and (L埤 (inclusions originated from magmatic meteoric mixing fluids. Isothermal minxing and surface fluid dilution are main evolution factors in mineralization fluids. Microthermometric values in ore formation stage are conformable with pressure (100 bar) and depth figures (350-400 meters). Mazraeh skarn deposit is characterized as an shallow skarn.

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APA: Copy

Gharesi, Mehdi, RASA, IRAJ, & YAZDI, MOHAMMAD. (2018). Investigation of Mazraeh Skarn mineralization, North of Ahar, with an emphasis on fluid inclusion studies. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 26(1 ), 229-244. SID. https://sid.ir/paper/388175/en

Vancouver: Copy

Gharesi Mehdi, RASA IRAJ, YAZDI MOHAMMAD. Investigation of Mazraeh Skarn mineralization, North of Ahar, with an emphasis on fluid inclusion studies. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2018;26(1 ):229-244. Available from: https://sid.ir/paper/388175/en

IEEE: Copy

Mehdi Gharesi, IRAJ RASA, and MOHAMMAD YAZDI, “Investigation of Mazraeh Skarn mineralization, North of Ahar, with an emphasis on fluid inclusion studies,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 26, no. 1 , pp. 229–244, 2018, [Online]. Available: https://sid.ir/paper/388175/en

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