The Yindongzi|Daxigou strata|bound barite|siderite, silver|polymetallic deposits discovered in the Qinling orogen are hosted within flysch facies in a deep|water fault|controlled basin on the passive northern margin of the Qinling microplate. The orebodies occur in a series of hydrothermal depositional rocks. Mineralization zoning is characterized by Fe|Ba←Ba|Cu←Pb|Ag→Cu|Ag→Pb→Au. This is obviously a gradational transition mineralization from vent|proximal mineralization to more distal mineralization. In this gradational transition between Chefanggou and Yindongzi, vent|proximal mineralization consists of silver|polymetallic orebodies (Pb|Ag), which is the center of hydrothermal mineralization. The Chefanggou Ba|Cu ore district in the west and the Yindongzi Cu|Ag ore district in the east represent vent lateral mineralization. Distal mineralization in the west is represented by the Daxigou Fe|Ba ore district while distal mineralization in the east is represented by the Pb ore district. Thick massive, laminated barren albite chert and jasperite, sometimes with minor silver|ploymetallic mineralization of commercial importance, and pyritization in rocks feature more distal mineralization. Geochemical anomalies of Au|As associations are found in ankerite phyllite and muddy sandstone. Actually, Au deposits are dominantly controlled by the late brittle|ductile shear zone. The Yindongzi | Daxigou strata | bound barite | siderite, silver | polymetallic deposits discovered in the Qinling orogen are hosted within flysch facies in a deep | water fault | controlled basin on the passive northern margin of the Qinling microplate. The orebodies occur in a series of hydrothermal depositional rocks. Mineralization zoning is characterized by Fe | Ba ← Ba | Cu ← Pb | Ag → Cu | Ag → Pb → Au. This is obviously a gradational transition mineralization from vent | proximal mineralization to more distal mineralization. In this gradational transition between Chefanggou and Yindongzi, vent | proximal mineralization consists of silver | polymetallic orebodies (Pb | Ag), which is the center of hydrothermal mineralization. The Chefanggou Ba | Cu ore district in the west and the Yindongzi Cu | Ag ore district in the east represent vent lateral mineralization. Distal mineralization in the west is represented by the Daxigou Fe | Ba ore district while distal mineralization in the east is represented by the Pb ore district. Thick massive, laminated barren albite chert and jasperite, sometimes with minor silver | ploymetallic mineralization of commercial importance, and pyritization in rocks feature more distal mineralization. Geochemical anomalies of Au | are found in ankerite phyllite and muddy sandstone. Actually, Au deposits are dominantly controlled by the late brittle | ductile shear zone.