Mineralogy and geochemistry of pegmatitic dykes in the Boroujerd-Nezam Abad zone with respect to trace and rare earth elements mineralization

Ghasemi Siani, Majid; Bayat, Sima

Volume 7, Issue 1 (Spring & Summer 2021) KJES 2021, 7(1): 231-248 | Back to browse issues page

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Ghasemi Siani M, Bayat S. Mineralogy and geochemistry of pegmatitic dykes in the Boroujerd-Nezam Abad zone with respect to trace and rare earth elements mineralization. KJES 2021; 7 (1) :231-248
URL: http://gnf.khu.ac.ir/article-1-2710-en.html

Mineralogy and geochemistry of pegmatitic dykes in the Boroujerd-Nezam Abad zone with respect to trace and rare earth elements mineralization

Majid Ghasemi Siani ^*

¹, Sima Bayat²

1- Kharazmi University , majid4225@yahoo.com
2- University of Tabriz

Abstract: (1644 Views)

Boroujerd-Nezam Abad zone widespread along NW-SE trend in part of Sanandaj-Sirjan zone. Borujerd-Nezam zone consists of hornfels, schist, phyllite, migmatite, granite and granodiorite rock types. Metamorphic (hornfels and schist) and igneous (granitoids) rocks are known as host pegmatitic dykes. Quartz, feldspar, muscovite and tourmaline are the most common pegmatite, and mica are as muscovite type with tendency to Li-bearing muscovite. Rb, Sr, Ba and Al are relatively enrichment, but REE, U, Sn and Ga and also Li, Ta and Cs show depleted. Enrichment index such as Mg/Li vs Li, Rb vs K/Rb and Ta vs Ga diagrams show that studied pegmatites are barren in REE and trace elements. Comparing to REE rich pegmatites, they show slight enrichment in LREE relative to HREE.

Keywords: Rare earth elements, Trace elements, Pegmatites, Boroujerd-Nezam Abad zone.

Full-Text [PDF 1897 kb] (501 Downloads)

Subject: Economic Geology
Received: 2019/08/8 | Accepted: 2020/12/22 | Published: 2021/08/1