Study Of Major Element Distribution Pattern And Its Occurrence In Kafang Dabaiyan Ore Block, Gejiu

Gejiu is a very important tin-ploymetallic mines exploited in long history in China.The mining area is falling into difficult status quo, i.e., shortage of minable tin resources.The author was looking for new minerals in work place,and make sure that minral can be used in the future.That will offer the evidence to complexutilization.The test result of rock samples in 1800 elevation and 1820 elevation pit shows 18 elements’s content is higher than the average backgroud value of crust.The content value has a quite disparity in different elevations.The content value of major mineralise element and peragenetic elements such as W、Bi、Mo、Au、Ag etc.is higher in volcanics than carbonatite,but the value in the vein is the highest.The anomalous zone of major mineralise element displayed in Northeast direction.The anomalous area in 1820 elevation is larger than 1800 elevation.Elements zoning shows that there was a polymineralization in region of interest,and maybe a gulph of ore will be discovered in some day.Cu、Sn、W、Bi、Mo、Ti、Au、Ag element have been studyed on occurrence.The major occurrence condition of copper is chalcopyrite which quality is excellent that there is few detrimental impurity in it and others are aftonite and kassiterolamprite;The major occurrence condition of tin is cassiterite, for another is kassiterolamprite;The occurrence condition of coexistence elements are scheelite、bismuthglance and bismuth; Molybdenum exists as molybdenite.Pyrrhotine and chalcopyrite contain trace gold .The region of interest is a polymetal area,if the paragenetic metals can be used multipurposely,it will take the amaizing benefit to the mining area.