Geological Characteristics and Ore-Searching Direction of the Tulingcun Molybdenum Polymetallic Deposit in Songxian County,Henan Province

Through the analysis on geological characteristics and metallogenic environment of the Tulingcun molybdenum polymetallic deposit in Songxian county of Henan province,it is suggested that this deposit can be classified into two types:altered crushed zone type and quartz vein type.Mineralization in the altered crushed zone is dominated by gold,with local molybdenum-bearing,which is poor as a whole.Mineralization in the quartz vein around northern Tulingcun consisting mainly of galenite and molybdenum,and the mineralization of the quartz vein around south of Daxigou is largely gold and molybdenum.Ore bodies are controlled by three-level volcanic apparatus,faults and underlying hidden rock bodies.Mineralization in the quartz vein formed during the late Xiong'er period,as a result of magma thermal fluids in volcanic rocks filling in horizontal joints and fissures of early rhyolite-porphyry.And afterwards Pb-Mo and Au-Mo mineralization occurred due to superimposition of ore-bearing thermal fluids from the hidden rock bodies.A comprehensive analysis suggests that the Au-Mo mineralization in the altered crushed zone is relatively weak,and the quartz vein is the preferred target for ore search.At the same time attention should also be focused on confirmation of concealed porphyry molybdenum deposits at depth.