INVESTIGATION OF THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF THE DIKES ASSOCIATED WITH COPPER MINERALIZATION AT THE SOUTHEASTERN ARDESTAN (NE ISFAHAN)

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SALEHI MARYAM; ALAMINIA ZAHRA; MANSOURI ESFAHANI MAHIN

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Journal: PETROLOGY Year:2017 | Volume:8 | Issue:30 Page(s): 81-98

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Title

INVESTIGATION OF THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF THE DIKES ASSOCIATED WITH COPPER MINERALIZATION AT THE SOUTHEASTERN ARDESTAN (NE ISFAHAN)

Author(s)

SALEHI MARYAM | ALAMINIA ZAHRA | MANSOURI ESFAHANI MAHIN | Issue Writer Certificate

Keywords

COPPER MINERALIZATIONQ2

DIKEQ2

GEOCHEMISTRYQ2

SE ARDESTANQ1

URUMIEH-DOKHTAR ZONEQ1

Abstract

The Ardestan study area lies in the northeast of Isfahan and at the outer margin of Urumieh -Dokhtar Volcanic Arc (UDMA). In this area, COPPER MINERALIZATION is associated with DIKEs. Mineralization occurred as sulfides (chalcocite, chalcopyrite and bornite) and oxides (malachite and azurite). According to field studies as well as petrographic and geochemical investigations, two different types of DIKEs are present. The first type, trending NW-SE and comprising fine crystalline gabbro, whereas the second type with relatively E-W trend are gabbro and pyroxene diorite. Geochemically, these rock are characterized by SiO2=45.8 to 52.8 wt.%, MgO with 6.9 wt.% (average), Na2O+K2O=5.6 wt.%, and Al2O3/TiO2=16.8%. All DIKEs are alkaline, related to back-arc tectonic setting in a wider concept associated with changing in source of magmatism. The second type shows enrichment in Ba, Sr, Rb, K, Zr, Nb, Ti, Cr and Ni in comparison to the first type. The first type is generated as a result of a subducted modified mantle while the latter shows an enriched astenospheric mantle source. It appears that there is a weak correlation between ore-forming and volatile elements in the mafic DIKEs. Overall, the same tectonic stresses are an essential controlling factor for the formation of second type E-W DIKEs associated with mineralization.

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APA: Copy

SALEHI, MARYAM, ALAMINIA, ZAHRA, & MANSOURI ESFAHANI, MAHIN. (2017). INVESTIGATION OF THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF THE DIKES ASSOCIATED WITH COPPER MINERALIZATION AT THE SOUTHEASTERN ARDESTAN (NE ISFAHAN). PETROLOGY, 8(30 ), 81-98. SID. https://sid.ir/paper/197030/en

Vancouver: Copy

SALEHI MARYAM, ALAMINIA ZAHRA, MANSOURI ESFAHANI MAHIN. INVESTIGATION OF THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF THE DIKES ASSOCIATED WITH COPPER MINERALIZATION AT THE SOUTHEASTERN ARDESTAN (NE ISFAHAN). PETROLOGY[Internet]. 2017;8(30 ):81-98. Available from: https://sid.ir/paper/197030/en

IEEE: Copy

MARYAM SALEHI, ZAHRA ALAMINIA, and MAHIN MANSOURI ESFAHANI, “INVESTIGATION OF THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF THE DIKES ASSOCIATED WITH COPPER MINERALIZATION AT THE SOUTHEASTERN ARDESTAN (NE ISFAHAN),” PETROLOGY, vol. 8, no. 30 , pp. 81–98, 2017, [Online]. Available: https://sid.ir/paper/197030/en

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