Geology and Geochemistry of Huofengya Gold Deposit in Ningqiang of Shaanxi

Huofengya gold deposit is located in the south wing area of Cangshe syncline,Eastern copper( gold) metallogenic of Tuohe-Linjiagou ductile shear belt,which is one of the most important gold mine in the study area. By the analysis of geological characteristics,trace elements,rare earth elements,fluid inclusions and sulfur isotopes of the gold deposit,it is considered that the gold deposit is mainly hosted in Pt2- 3bk22- 2blayer,and can be divided into three ore sections of Linjiaya,Taiyangpo and Xiaziwan,13 gold orebodies are verified in total,which are controlled by the Tuohe-Linjiagou thrust ductile shear belt. The quartz vein type is an important type of gold mineralization in Huofengya gold deposit. The ore-forming fluid is high temperature and low salinity fluid with positive Eu anomaly,and is of many stages,so the source of ore-forming material may be the mixture of granite porphyry and strata.