Geochemical characteristics of igneous host rocks associated of Lubin-Zardeh epithermal gold deposit, NW of Iran

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RAHMANI SH.; ZAMANIAN H.; Zareisahameih R.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: GEOSCIENCES Year:2020 | Volume:29 | Issue:114 Page(s): 289-302

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Title

Geochemical characteristics of igneous host rocks associated of Lubin-Zardeh epithermal gold deposit, NW of Iran

Author(s)

RAHMANI SH. | ZAMANIAN H. | Zareisahameih R. | Issue Writer Certificate

Keywords

Lead isotopeQ1

Strontium-NeodymiumQ1

Trace element and REEQ1

Quartz-monzoniteQ1

Lubin-ZardehQ1

West AlborzQ1

Abstract

The study area is located 45Km NE Zanjan in the Azerbaijan-Western Alborz zone. Quartz-monzonite and dacitic brecciated tuffs are the main host rocks to the Lubin-Zardeh deposit. These rocks are predominantly of K-high calc-alkaline shoshonitic I-type, metaluminous magnesian affinities of Cordilleran type. The intrusive rocks are enriched in LILE, LREE and depleted from HFSE, MREE and HREE and Y. A listric-shaped REE pattern and average La/Yb ratios of host rock indicates higher water content and fO2 in the magma and hornblende fractionation. Their relatively low to moderate ISr values (0. 7047– 0. 7051), positive ε Nd (t = 36 Ma) values (0. 39– 2. 1) and TDM ages of 0. 69 to 1. 06 Ga, with Pb isotopic ratios of (206Pb/204Pb) i = 18. 49– 18. 68, (207Pb/204Pb) i = 15. 58– 15. 61 and (208Pb/204Pb) i = 38. 33– 38. 77. Based on textural evidence (coarse amphibole crystals), geochemical data (major, trace and Rare earth elements) and isotopic contents of Pb, Sr-Nd, it is suggested that these rocks correspond to geochemical and isotopic compositions of the host rocks of porphyry and epithermal deposits in the Urmia Dokhtar zone of West Alborz-Azerbaijan (Arasbaran) and Eastern Pontides epithermal deposits, Turkey.

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APA: Copy

RAHMANI, SH., ZAMANIAN, H., & Zareisahameih, R.. (2020). Geochemical characteristics of igneous host rocks associated of Lubin-Zardeh epithermal gold deposit, NW of Iran. GEOSCIENCES, 29(114 ), 289-302. SID. https://sid.ir/paper/31509/en

Vancouver: Copy

RAHMANI SH., ZAMANIAN H., Zareisahameih R.. Geochemical characteristics of igneous host rocks associated of Lubin-Zardeh epithermal gold deposit, NW of Iran. GEOSCIENCES[Internet]. 2020;29(114 ):289-302. Available from: https://sid.ir/paper/31509/en

IEEE: Copy

SH. RAHMANI, H. ZAMANIAN, and R. Zareisahameih, “Geochemical characteristics of igneous host rocks associated of Lubin-Zardeh epithermal gold deposit, NW of Iran,” GEOSCIENCES, vol. 29, no. 114 , pp. 289–302, 2020, [Online]. Available: https://sid.ir/paper/31509/en

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