Separation and Classification of Veins Based on Au Grades by Using Concentration-Volume (C-V) Fractal  Model in Qoloqoleh Gold Deposit, Kurdistan

Dadashzadeh Ahari, H; Afzal, P; Rashidnejad Omran, N

doi:10.22071/gsj.2015.42918

Separation and Classification of Veins Based on Au Grades by Using Concentration-Volume (C-V) Fractal Model in Qoloqoleh Gold Deposit, Kurdistan

Document Type : Original Research Paper

Authors

H Dadashzadeh Ahari ¹

P Afzal ²

N Rashidnejad Omran ³

¹ Ph.D. Student, Young Researchers and Elites Club , North Tehran Branch, Islamic Azad University, Tehran, Iran

² Assistant Professor, Department of Mining Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran.

³ Assistant Professor, Department of Geology, Faculty of Basic Science, Tarbiat Modares University, Tehran, Iran

10.22071/gsj.2015.42918

Abstract

Separation of high grade from low grade veins and veinlets is very important operation in vein type deposits, especially in gold deposits because low value variations are very significant in their mineral exploration. In this paper, Concentration-Volume (C-V) fractal model was utilized for separation and classification of gold veins in the Qolqoleh deposit, which is located in the Kordestan province, NW of the Sanandaj-Sirjan metamorphic structural zone. Based on the obtained results from the model, different populations consisting of wall rocks, low grade, moderately grade, high grade and enriched zones were separated in the deposit. Rock types of the deposit were correlated with resulted mineralized zones by log ratio matrix. The most parts of the deposit have Au values lower than 3.98 ppm including low and moderately grade veins. However, mineralized veins hosted in chlorite-schists and this can be one of the exploration keys for gold prospecting in other parts of the Sanandaj-Sirjan zone.

Keywords

Concentration-Volume (C-V) fractal model

Qolqoleh Gold Deposit

Logratio matrix

Chlorite-Schist

Kurdistan