Old The Takamatsu Ore Field Lo Tangba And Ore Block Ore Deposit Geochemistry And Metallogenic Prediction

Based on the research on the fundamental geology and the analysis of the macroscopical and microcosmic geological investigative information, the paper has drawn a conclusion that Lutangba oreblock belongs to the exhalative hydrothermal sedmentary deposit reformed by subsequent pneumatoly-hydrothermal superimposition and studied the tectono-geochemical features with the help of computers, multivariate statistical analysis and ore-controlling characteristics of the deposit. Through systematic study on the deposit genesis, ore-controlling factors and tectono-chemistry features, metallogenic prognosis has been done. Some conclusions can be drawn as follows:No1. Through the research on the deposit geological and geochemical characteristics , the author has discussed the metallogenic sources and identified the cause of formation of the Lutangba oreblock as the seabed exhalative hydrothermal sedimentary mineralization of the medium-later Indo-Chinese epoch and the granitic superimposed mineralization of the late Yanshanian epoch. The deposit has many mineralization stages and periods. It is a poly and compound genesis deposit.No.2. Through the systematic contrast study of the ore bearing, ore structure, tectonic and element intergrowth combination characteristics of the two types of deposits located in the both sides of Lutangba fault, the author think that the vein deposit was from stratiform deposit formed by the granitic superimposed mineralization.NO.3. The author has analyzed the multi-element intergrowth combination characteristics from the surface of the ore district and different levels based on the tectono-chemistry. By means of R type factor analysis, the tectono-chemistry.characteristics of the ore district has been studied through the research on the spatial change of mineralization abnormality in the ore district.NO. 4. On the basis of the systematic study on genesis, geological characteristic, geochemistry and tectono-chemistry, the author has put forward several metallogenic prognosis signs and the four prospecting perspective areas are pointed out and analyzed respectively for prospecting.