STUDYING OF PETROGRAPHY AND MINERALOGY OF ALTERATION ZONES IN ANDESITES OF SAR-CHESHMEH PORPHYRY CUPPER MINE(SOUTHWEST OF KERMAN)

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MEHRABI KERMANI M.; KHALILI M.; NOGHREHEYAN M.; MOGHAMI M.

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Journal: RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE" Year:2008 | Volume:34 | Issue:5 (GEOLOGY) Page(s): 99-118

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Title

STUDYING OF PETROGRAPHY AND MINERALOGY OF ALTERATION ZONES IN ANDESITES OF SAR-CHESHMEH PORPHYRY CUPPER MINE(SOUTHWEST OF KERMAN)

Author(s)

MEHRABI KERMANI M. | KHALILI M. | NOGHREHEYAN M. | MOGHAMI M. | Issue Writer Certificate

Keywords

HYDROTHERMAL ALTERATIONQ3

MINERAL CHEMISTRYQ3

SAR-CHESHMEH COPPER DEPOSITQ3

Abstract

The Sar-cheshmeh porphyry Cu-Mo deposit is located in the south of Uromieh Dokhtar Volcanic belt (65 km southwest of Kerman City). The Eocene andesites are the predominant host rocks of the ore deposit. These rocks are characterized by gray color and porphyry texture. Plagioclase (oligoclase-andesine), hornblende, biotite (phlogopite), and minor quartz are the major minerals and Zircon and apatite are the magmatic accessory minerals of these rocks. The studied andesites have experienced HYDROTHERMAL ALTERATION.Propylitic alreation is identified by crystallization of albite and replacement of plagioclase and K-feldspar by albite, and it is also characterized by epidote (pistashite), calcite, chlorite (clino chi ore) and sulfide. Pervasive sericitization was the last hydrothermal stage leading to crystallization of sericite, quartz and sulphide. Hornblende is almost totally replaced by biotite and chlorite, and early biotite shows partial or total chloritization. Two generations of quartz, magmatic and hydrothermal are common. Furthermore, the widespread occurrence of opaque minerals (pyrite, chalcopyrite, chalcocite) in this zone is notable. Clay minerals (Ilite, Kaolinite, Muscovite, Dickite) are the major mineral assemblage of argillic zone. Pyrite is the predominant disseminated sulfide in all alteration lithologies. Biotite from the propylitic and phyllie alteration zones possesses higher Al2O3 Sio2, and FeO concentrations than magmatic one. This phenomenon is similar to that recorded for biotite of other porphyry Cu deposits Throughout the woeld. The mineral assemblages of the alteration zones along with different chemical composition of biotite, clearly point to the various physico - chemical condition governing the HYDROTHERMAL ALTERATION processes.

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APA: Copy

MEHRABI KERMANI, M., KHALILI, M., NOGHREHEYAN, M., & MOGHAMI, M.. (2008). STUDYING OF PETROGRAPHY AND MINERALOGY OF ALTERATION ZONES IN ANDESITES OF SAR-CHESHMEH PORPHYRY CUPPER MINE(SOUTHWEST OF KERMAN). RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE", 34(5 (GEOLOGY)), 99-118. SID. https://sid.ir/paper/55844/en

Vancouver: Copy

MEHRABI KERMANI M., KHALILI M., NOGHREHEYAN M., MOGHAMI M.. STUDYING OF PETROGRAPHY AND MINERALOGY OF ALTERATION ZONES IN ANDESITES OF SAR-CHESHMEH PORPHYRY CUPPER MINE(SOUTHWEST OF KERMAN). RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE"[Internet]. 2008;34(5 (GEOLOGY)):99-118. Available from: https://sid.ir/paper/55844/en

IEEE: Copy

M. MEHRABI KERMANI, M. KHALILI, M. NOGHREHEYAN, and M. MOGHAMI, “STUDYING OF PETROGRAPHY AND MINERALOGY OF ALTERATION ZONES IN ANDESITES OF SAR-CHESHMEH PORPHYRY CUPPER MINE(SOUTHWEST OF KERMAN),” RESEARCH JOURNAL OF UNIVERSITY OF ISFAHAN "SCIENCE", vol. 34, no. 5 (GEOLOGY), pp. 99–118, 2008, [Online]. Available: https://sid.ir/paper/55844/en

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