A study of tectonic control of mineralization and geological Indicators for ore-prospecting in the Jinshan (Gold Mountain) gold deposit, Xinjiang

Abstract：The Jinshan gold deposit is a large-size epithermal deposit in Western Tianshan Mountains, whose gold ore bodies are mainly controlled by faults. The authors have reached the conclusion that faults evolved through three periods on the basis of recent years’ field exploration and drilling section analysis, i.e., pre-mineralization period, mineralization period and post-mineralazition period. The general regularity of fault control is as follows: the NW-trending faults controlled the locations of gold deposits, the NS-trending faults controlled the superimposition and enrichment of gold ore bodies during the activation in the late mineralization epoch, the NE-trending faults were associated with immediate-acidic dykes and intrusives during the early epoch and cut as well as lifted or lowered the ore bodies after the mineralization epoch, and the EW-trending faults cut the NS-trending ore bodies after the mineralization epoch. The authors have also summed up geological indicators for ore-prospecting.