Investigation of geochemical behavior of rare elements in Moshirabad granite- pegmatite system (southwest of Qorveh, Kordestan)

Abstract

The Fertile pegmatites are known as the most important source of strategic and rare elements. These coarse-grained granitic units are related to potentially granitic intrusions and the identification of the parental intrusion is the first step of their exploration and recognition. In the present paper, the Moshirabad granite-pegmatite system located in southwest of Qorveh has been studied using bulk-rock data and available geological information in order to consider rare elements behavior and their contents. The investigations show that the studied igneous units did not formed in a unique fractionation succession, but rather happened separately in parallel differentiation processes. During sequential injections and development of fractionation (Rb increase and K/Rb decrease), the metals such as Sr, Zn, Ba, REEs, Th, Zr, and Hf were depleted whereas, the elements including Nb, Ta, Be, and Ga were enriched. In addition, the evidences imply that hydrothermal activities, also, involved in the concentration and depletion of the elements.

Keywords

• rare elements
• geochemical indicators
• lct granite- pegmatite system
• moshirabad intrusive body
• ebrahim attar pegmatite