Yunnan Lancang Dam Old Lead-antimony Polymetallic Ore Concentration Area Of ​​integrated Information Metallogenic Prediction

This paper combines the Yunnan LanCang BaLao lead antimony polymetallic deposit comprehensive information metallogenic prediction of the project to research topic selection, study to ore deposit geology as the foundation, geochemical, remote sensing, modern digital information and computing science new technology, new method and new theory, geological information of multiple for the processing and analysis, this paper summarizes the LanCang dam old lead more of the metal ore-formation conditions and ore-forming regularity. Collect geology, exploration, remote sensing space information for an organic whole, comprehensive information fusion and metallogenic target area location prediction, obtain the following results and know.The area north of fracture structure as main structure, and the western dew in the ancient world LanCang group of Huimin group mica schist quartz, the eastern dew in the Mesozoic Jurassic all flower left group sandstone, silty sandstone, seal of a dark mica adamellite distributed in exploration area southeast; Rock mass of the fracture structure and the ore body has certain control function.At present has found that mining of mineral deposits in the lead, sb. Lead polymetallic ore body space form by north west of the fracture structure to control, ore body with broken form in with similar, the genetic type for broken with heat fluid filling type ore deposits.The more moderate resolution spectral ETM+data, hyperspectral ASTER and high spatial resolution Worldview of data each1scene, use of ERDAS IMGINE image processing software and information extraction platform, remote sensing data with precise geometric correction made many digital enhancement processing, line tectonics and ring geological, geophysical and geochemical exploration, cooperate to use information, to deduce F3for concealed fault, old mines in the ring structures center.Research in low-temperature mineral lead to antimony ore solution as the distribution bigger; Old mines for remote sensing the central place of ring structures, center for Cu, Bi high temperature mineral, periphery for Pb, Ag, Sb, low temperature in mineral. F2-1abnormality area Sb mineralization and F1fault of Antimony ores body (change) is to show the character of NW, concluded that the ore-forming solution from the east to the north west direction migration may exist.Quoted exploration geophysical results:exploration area of electricity in the ladder with six obvious abnormal depending on the polarization rate anomaly, which is expected to be abnormal prospecting, two abnormal areas cause by the formation, three properties unknown abnormal areas.According to the geological, geophysical and geochemical exploration, ore deposit metallogenic information analysis and remote sensing, determine the exploration area favorable metallogenic target area10place, among them2class A (new mines and old mine),2B level (F2-1, F2-2mineralization abnormality area),6C level (F1-1, F1-2, F1-3, F3-1, F3-2, F3-3mineralization abnormality area), optimizing F2-1, F2-2implement engineering verification...