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Rahimzadeh, Bahman, Ghosoun, Zheira, Masoudi, Fariborz. (1400). Identification of Fe3+ content in Epidote from Varan, Urumieh-Dokhtar magmatic arc, Iran: using FTIR and Raman spectroscopy. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 14(2), 131-139. doi: 10.30495/ijes.2021.685387
Bahman Rahimzadeh; Zheira Ghosoun; Fariborz Masoudi. "Identification of Fe3+ content in Epidote from Varan, Urumieh-Dokhtar magmatic arc, Iran: using FTIR and Raman spectroscopy". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 14, 2, 1400, 131-139. doi: 10.30495/ijes.2021.685387
Rahimzadeh, Bahman, Ghosoun, Zheira, Masoudi, Fariborz. (1400). 'Identification of Fe3+ content in Epidote from Varan, Urumieh-Dokhtar magmatic arc, Iran: using FTIR and Raman spectroscopy', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 14(2), pp. 131-139. doi: 10.30495/ijes.2021.685387
Rahimzadeh, Bahman, Ghosoun, Zheira, Masoudi, Fariborz. Identification of Fe3+ content in Epidote from Varan, Urumieh-Dokhtar magmatic arc, Iran: using FTIR and Raman spectroscopy. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1400; 14(2): 131-139. doi: 10.30495/ijes.2021.685387

Identification of Fe3+ content in Epidote from Varan, Urumieh-Dokhtar magmatic arc, Iran: using FTIR and Raman spectroscopy

Iranian Journal of Earth Sciences
مقاله 4، دوره 14، شماره 2، تیر 2022، صفحه 131-139    اصل مقاله (815.21 K)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.30495/ijes.2021.685387
نویسندگان
Bahman Rahimzadeh* ؛ Zheira Ghosoun؛ Fariborz Masoudi
School of Earth Sciences, Shahid Beheshti University, Tehran, Iran
چکیده
This study is aimed to determine the Fe content in natural epidote from Varan area (Urumieh-Dokhtar Magmatic Arc, Iran) by using vibrational FTIR and Raman spectroscopy and EPMA analyses. Fe3+ concentration calculated from FTIR spectroscopic data is in the range of 0.96 to 1 apfu. The results are in complete agreement with EPMA data. The comparison between obtained Raman spectra of studied epidote grains and those from the RRUFF database suggest that epidote from Varan area is rich in Fe3+. High Fe3+ content might reflect moderate to high oxygen fugacity during the crystallization of epidote. This short paper demonstrates that the quantification of the Fe content in epidote via FTIR method is as good as EPMA, whereas the utilization of a low-cost Raman spectrometer  helps in quickly distinguishing between Fe-rich and Fe-poor epidote, which even could be useful in the case of field studies.
Key-words: Epidote, FTIR, Raman spectroscopy, Iron content, Urumieh-Dokhtar Magmatic Arc, Iran.
کلیدواژه‌ها
Epidote؛ FTIR؛ Raman spectroscopy؛ Urumieh-Dokhtar Magmatic Arc؛ Iran
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