Geological Characteristics and Prospecting Marks of Tungsten Deposit in Zhaishang Gold-Tungsten Deposit, Minxian County, Gansu Province

The Zhaishang deposit is a large gold deposit associated with a small tungsten deposit.Among the 15 tungsten mineralized bodies that have been discovered,six of them are located in the gold ore bodies.There are seven same anomaly areas of gold and tungsten in nine places.The tungsten mineral is mainly scheelite with a small amount of wolframite.The scheelite is also the important gold-bearing mineral and gold is closely related to tungsten.The ore-vein is dominated by the interlayer fractured belts.Ore bodies appear at lithology-flaccid strata just as carbonaceous slate,shale slate,and calcic slate etc.Types of alteration are mainly silicification,pyritization,and then carbonatization,sericitization.Low resistance with high polarization anomalies belt can indicate the mineralization and ore-vein spreading positions.The anomalies of tungsten in water system sediments and soil are all low values along a belt that uniform with the ore-vein as we know at present.The research results and exploration practices have proved that looking for tungsten in gold mineralizing bodies is the simplest way.