Dachang Copper Pit (long Slope) Tin Peripheral Geological Features And Prospecting Forecast

The master dissertation title of The Geological Feature and The Prospecting Forecast in Tongken (Changpo) Tin Ore Periphery Deposit in Dachang, Guangxi is selected based on the national crisis mine project-"The Supersedes Resources Perambulation in Tongken Tin ore in Nandan county, Guangxi" of the special study-"The comprehensive geosciences information research and ore body localization forecast in Tongken Tin ore depth and periphery in Nandan county, Guangxi"(serial number: 200545022).On the basis of comprehensive collection geosciences information in Tongken (Changpo) Tin ore deposit and periphery deposit in Dachang, Guangxi, through geosciences information digitization, research three-dimensional geosciences information, take mineralizes the forecast as the center, studies ore control factors such as the stratum lithology, the magmatic activity and the structure and ore forming information such as the mineral deposit, the ore spot, the materialization spot, the geophysical prospecting, the geochemical prospecting and the geology anomaly of remote sense in the spatial characteristic, and according to spatial characteristic establishment synthesis information mineral resource prospecting model .Through the relation studying of three-dimensional geosciences information and synthesis information prospecting model, definite and optimal prospecting target area.Through the above research ,we have made the following main achievement:1. Between various ore deposits in Dachang ore field, in the ore control factors such as the stratum, the structure, the magmatic rock, the ore occurrence type, the ore occurrence rule and the mineral assemblage characteristic, has the similarity and comparableness. According to the above the rule, combines other methods such as the geosciences information, the geophysical prospecting, the geochemical prospecting and the remote sense, can provide more comprehensive guidance to metallogenetic prognosis and prospecting forecast.2. In the metallogeny, the ore field of Dachang is a multi-stratums, the multi-origins, the multi-stages, the multi-source and the multi-types polygenetic of complex causes of formation ore belt. The ore-forming material mainly comes from stratums, in Devonian period, forms the initial mineral resources level and the stratified ore body after the hydrothermal convection mineralization; after the multi- phase activity of the magma invasive in Yanshan period bring some mineralization material and has provided the enough heat energy, transformed and superposed the primary ore deposit, have formed the complicated mineral deposit of today.3. In the synthesis information mineralization forecasting process, on the premise of geology information, the definite information (known ore deposit, ore spot) are a model, the remote sensing information and geochemical information are the guide, the geophysical information for depth portion localization, such method are extremely advantageous.