Gold Mining Areas Of Guizhou Pu Ching Antimony Ditch, Soil Geochemical Survey And Prospecting Forecast

This thesis has been fluently finished under the sponsore of the Nation Finance Department for the local items of exploration perambulation: The General Investigation for the Western Puqing Antimony-gold deposit of Dachang Antimony ore-field in the Qinglong Country,Guizhou.Studies such as the regional metallogenitc geologic setting, geological characteristics and ore-controlling factors of two typical deposits(Dachang Antimony Deposit and Laowanchang lateritic gold deposit) in Dachang ore-field, the geological characteristics of Puqing deposit,offer the theoretical foundation for the research of using soil geochemistry survey to mine searching in Puqing exploration area. Based on sampling method tests(sampling horizon and size fraction experiments),it is known that the optimal sampling horizon is B2 soil and the best sampling size fraction is -20 to -40 mesh grain size.Au,Sb,As and Cu are indicator elements for prospecting. these studies ensure the validitv of the soil geochemistry survey result.The model of lateritic gold deposit is mainly based on previous research in lateritic gold deposit and provisional aridity-"karst aridity" in Puqing exploration area. we can using this model to guide lateritic gold ore-prospecting work in Puqing exploration area. With the studies on geochemical characteristics and element abnormal Characteristics of soils in Puqing exploration area, The model of soil gelchemical abnormal is established.With using soil geochemistry survey to mine searching in Puqing exploration area, some valuable abnormal areas have been found. Combined with the ore-controlling factors including strata, Lithologic character,4 key targets for ore-exploration are selected. Every key target has been confirmed by exploration through surface work. It proves that soil geochemistry survey to mine searching in Puqing exploration area. Methods and steps of soil geochemistry survey to mine searching are briefly summarized through . soil geochemistry survey to mine searching in Puqing exploration area.