Analysis on tectonic background of formation and characteristics of albite carbonate brecciaite from Ertaizi Cu-Au deposits in the Qinling orogen
陕西二台子铜金床钠长石碳酸（角砾）岩类特征及形成构造背景分析

Based on research on petrology, mineralogy, petrochemistry, geochemistry, and REE for albite carbonate brecciaite, geological and geochemical characteristic of albite carbonate brecciaites from Ertaizi copper-gold deposits in the Qinling orogen have been discussed in the paper. From Late Devonian epoch to Carboniferous period, under tectonic formation of regional penetration of Mantle feather, hydrothermal fluids in depth upward alone pre-existing tectonic feeder and poured into Ertaizi hydrothermal subbasin on the sea bed, so hydrothermal sedimentary rocks were formed and were controlled by synsedimentary faults and strata. These rocks which were main parts of gold source layer with gold mineralization consist of quartz barite carbonate breccia, carbonate breccia, poly-component breccia, albite, albite carbonate rock. In Yanshanian movement, in the intersections of NE trending fault, NW trending fault and EW trending fault, pre-existing hydrothermal brecciaite were superimposed by hydrothermal fluids which derived from regional penetration of Mantle feather, so albite carbonate breccia in barrel-shaped were formed. Copper-gold deposits hosted in Ertaizi albite carbonate breccia in the Qinling orogen was formed by the same hydrothermal fluid.