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

Hripsimeh Az-Mikaelians Universidade Islâmica de Azad, Iran http://orcid.org/0000-0003-3772-2974
Afshin Ashja-Ardalan Universidade Islâmica de Azad, Iran http://orcid.org/0000-0002-1800-9594
Seyed-Jamal Sheikhzakariayi Universidade Islâmica de Azad, Iran http://orcid.org/0000-0002-4288-572X
Shiva Ansri Universidade Islâmica de Azad, Iran http://orcid.org/0000-0001-7539-1892

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

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

10/01/2020

How to Cite

AZ-MIKAELIANS, Hripsimeh et al. INTRODUCING THE MAIN AND ACCESSORY MINERALS IN THE GRANITOID BATHOLITH OF SHIRKUH, YAZD (CENTRAL IRAN) AND ITS TOURMALINE AND GARNET PHASES. Geosaberes, Fortaleza, v. 11, p. 76 - 99, jan. 2020. ISSN 2178-0463. Available at: <http://geosaberes.ufc.br/geosaberes/article/view/910>. Date accessed: 19 apr. 2024. doi: https://doi.org/10.26895/geosaberes.v11i0.910.

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