INTRODUCING THE MAIN AND ACCESSORY MINERALS IN THE GRANITOID BATHOLITH OF SHIRKUH, YAZD (CENTRAL IRAN) AND ITS TOURMALINE AND GARNET PHASES

Authors

DOI:

https://doi.org/10.26895/geosaberes.v11i0.910

Keywords:

Garnet, Tourmaline, Shikuh Granite, Iran, Yazd

Abstract

Batholith of Shirkuh, Yazd, is part of the central Iranian structural zone, located southwest of the province. The batholith is composed of five rock units, namely monzogranite, granodiorite, quartz monzonite, quartz monzodiorite, and syenogranite.The batholith, having cut through the Nayband formation (Upper Triassic), with Cretaceous limestones and a sandstone and conglomerate unit (Lower Cretaceous) lying on top as an angular unconformity, probably dates back to the Jurassic. Field and experimental investigations revealed various accessory minerals in the granite mass, including garnet, tourmaline, amphibole, zircon, sphene, apatite, biotite, muscovite, and epidote. The garnet, tourmaline, and amphibole were investigated by an Electron Microprobe (EMP), revealing the granite mass to be of almandine, grossular, and uvarovite types, the tourmaline of the rossmanite and foitite types, and amphiboles of the tschermakite and hornblende types.

Author Biographies

  • Hripsimeh Az-Mikaelians, Universidade Islâmica de Azad, Iran

    Ph.D. Student, Department of Petrology, Islamic Azad University, North Tehran Branch, Tehran, Iran.

  • Afshin Ashja-Ardalan, Universidade Islâmica de Azad, Iran

    Assistant Professor, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran.

  • Seyed-Jamal Sheikhzakariayi, Universidade Islâmica de Azad, Iran

    Professor Assistente, Departamento de Geologia, Universidade Islâmica Azad, Ramo de Ciência e Pesquisa, Teerã, Irã.

  • Shiva Ansri, Universidade Islâmica de Azad, Iran

    Professor Assistente, Departamento de Geologia, Universidade Islâmica Azad, Ramo Eslamshahr, Irã.

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Published

2020-01-10

Issue

Vol. 11 (2020): Vol 11 (2020)

Section

Artigos

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How to Cite

INTRODUCING THE MAIN AND ACCESSORY MINERALS IN THE GRANITOID BATHOLITH OF SHIRKUH, YAZD (CENTRAL IRAN) AND ITS TOURMALINE AND GARNET PHASES. (2020). Geosaberes, 11, 76-99. https://doi.org/10.26895/geosaberes.v11i0.910