Mineralogy and geochemistry of Nodoushan Zn-Pb deposit: A transitional deposit in UDMA, Central Iran

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Motevali Kamran; BEHZADI MEHRDAD; Mohammad Yazdi

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Journal: GEOSCIENCES Year:2018 | Volume:27 | Issue:supplement 106 Page(s): 119-130

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Title

Mineralogy and geochemistry of Nodoushan Zn-Pb deposit: A transitional deposit in UDMA, Central Iran

Author(s)

Motevali Kamran | BEHZADI MEHRDAD | Mohammad Yazdi | Issue Writer Certificate

Keywords

Vein-type

Epithermal

Zn-Pb deposit

Nodoushan

Abstract

Eocene magmatism with intermediate-acid tuffs and volcanic rocks, the host to the Nodoushan deposit in Yazd province, intruded by Oligocene early diorite and later granite plutonic rocks. The former involved in iron skarn (containing epidote and euhedral grossularite) to the north and northern part of the deposit, the latter contributed to fault-controlled Zn-Pb deposit. The structural features controlled both the mineralization and consequent alterations which ranged from silicification (central) to argillic alteration (northern). Propylitic alteration and dolomitization considered the minor ones, the iron contamination of which could be provided by earlier iron mineralization. Sulfide minerals are dominantly pyrite, sphalerite and galena followed by chalcopyrite and late stage copper minerals such as covellite, digenite, bornite, chalcocite. Oxide minerals developed to the depth of 40 m as a result of faults. Sphalerite which is of high-Fe type was characterized by extensive chalcopyrite disease, the iron content of which provided by earlier iron concentration. The concentration of chalcopyrite exsolution along sphalerite margins as well as galena veinlets is due to the thermal shock of later stage hydrothermal fluids that deposited galena and chalcopyrite. Negligible fossil replacements indicate both mineralization and alteration. It was concluded that the Zn-dominant mineralization was deposited under the structural controlling faults which reflects part of its earlier iron mineralization.

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APA: Copy

Motevali, Kamran, BEHZADI, MEHRDAD, & Mohammad, Yazdi. (2018). Mineralogy and geochemistry of Nodoushan Zn-Pb deposit: A transitional deposit in UDMA, Central Iran. GEOSCIENCES, 27(supplement 106), 119-130. SID. https://sid.ir/paper/721145/en

Vancouver: Copy

Motevali Kamran, BEHZADI MEHRDAD, Mohammad Yazdi. Mineralogy and geochemistry of Nodoushan Zn-Pb deposit: A transitional deposit in UDMA, Central Iran. GEOSCIENCES[Internet]. 2018;27(supplement 106):119-130. Available from: https://sid.ir/paper/721145/en

IEEE: Copy

Kamran Motevali, MEHRDAD BEHZADI, and Yazdi Mohammad, “Mineralogy and geochemistry of Nodoushan Zn-Pb deposit: A transitional deposit in UDMA, Central Iran,” GEOSCIENCES, vol. 27, no. supplement 106, pp. 119–130, 2018, [Online]. Available: https://sid.ir/paper/721145/en

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