PETROGRAPHY AND PETROGENESIS OF HASHT-KUH KHEZRABAD OF YAZD SKARNS

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GHANEI ARDAKANEI JAVAD; MEHDIZADEH SHAHRI HOSSEIN; DARVISHZADAH ALI; MACKIZADEH MOHAMMAD ALI

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Journal: PETROLOGY Year:2014 | Volume:5 | Issue:17 Page(s): 69-82

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Title

PETROGRAPHY AND PETROGENESIS OF HASHT-KUH KHEZRABAD OF YAZD SKARNS

Author(s)

GHANEI ARDAKANEI JAVAD | MEHDIZADEH SHAHRI HOSSEIN | DARVISHZADAH ALI | MACKIZADEH MOHAMMAD ALI | Issue Writer Certificate

Keywords

PARAGENETIC RELATIONSHIPSQ2

POLYGENIC SKARNQ2

KHEZRQ2

ABAD GRANITOIDQ2

HASHTQ2

KUH SKARNQ2

Abstract

The KHEZR-Abad granitoid intrusive body is located in the north-west of Yazd province within Urumia-Dokhtar magmatic arc. The intrusion of this body into the Cretaceous carbonate rocks (Taft Formation), gave rise to HASHT-kuh skarn mineralization with the following mineral assemblage: Garnet+ Clinopyroxene+Epidote+Tremolite-Actinolite+Chlorite+Calcite+Quartz Mineral associations studies show that pyroxene- garnet occurrence have most relations and are widespread in skarn. A detailed study of PARAGENETIC RELATIONSHIPS of skarn minerals clearly demonstrate that there are two stages in skarn evolution system, so the HASHT-kuh skarn can be considered as a POLYGENIC SKARN. On the basis of mineral chemistry data the garnet tends to be grossular and pyroxene is augite in composition. The peak temperature of contact metamorphism episode is accompanied by pyroxene crystallization in the early stage followed by overprinting of garnet formation. Due to presence of Al/Fe+3 periodic changes in fluids during garnet precipitation, zoning structure in some garnets was developed. The prevailing oxidation conditions during crystallization of fluids caused the instability of pyroxene (reducing fO2) and the growth of andradite garnet could be occurred at T<550oC in skarn system.

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APA: Copy

GHANEI ARDAKANEI, JAVAD, MEHDIZADEH SHAHRI, HOSSEIN, DARVISHZADAH, ALI, & MACKIZADEH, MOHAMMAD ALI. (2014). PETROGRAPHY AND PETROGENESIS OF HASHT-KUH KHEZRABAD OF YAZD SKARNS. PETROLOGY, 5(17), 69-82. SID. https://sid.ir/paper/196957/en

Vancouver: Copy

GHANEI ARDAKANEI JAVAD, MEHDIZADEH SHAHRI HOSSEIN, DARVISHZADAH ALI, MACKIZADEH MOHAMMAD ALI. PETROGRAPHY AND PETROGENESIS OF HASHT-KUH KHEZRABAD OF YAZD SKARNS. PETROLOGY[Internet]. 2014;5(17):69-82. Available from: https://sid.ir/paper/196957/en

IEEE: Copy

JAVAD GHANEI ARDAKANEI, HOSSEIN MEHDIZADEH SHAHRI, ALI DARVISHZADAH, and MOHAMMAD ALI MACKIZADEH, “PETROGRAPHY AND PETROGENESIS OF HASHT-KUH KHEZRABAD OF YAZD SKARNS,” PETROLOGY, vol. 5, no. 17, pp. 69–82, 2014, [Online]. Available: https://sid.ir/paper/196957/en

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