| Fenghuangshan copper deposit is situated at east central of the Middle-Lower Yangtze metallogenic belt, the northern of Yangxin-Changzhou deep-seated fault, and it is one of the most significant skarn-porphry deposits in the area. This research mainly paid attention to geological, geochemical and geophysical research and aims at evaluating the validity of various exploration methods and the Prediction of three-dimensional visualization in deep and around the Fenghuangshan deposit, and then offer the most effective and comprehensive exploration methods. Based on the vast previous research, the following methods are utilized:field observation, regional geological survey, analysis of economic geology and structure, petrography research, major and trace elements analysis, the trace of fluid inclusions, the technology of geophysical survey, etc.There are three types of deposits, skarn-type Cu-Fe deposit associated with Xinwuli granodiorite, porphyry-type Cu-Au (Mo) deposit related to quartz monzobioritic porphyry in the south, and porphyry-type Cu-Pb-Zn deposit in connection with dioritic porphyry. And two mineralization periods (skarn and porphyry) and nine stages have been divided. The composition characteristics of ore-forming fluids, evolution, the pressure and temperature of mineralization have been analyzed and discussed, according to fluid inclusions research. It is demonstrated that the mixture of underground water is essential for mineralization.The mineralized strata and igneous which are apt to mineralize have been pointed out by analyzing major mineralized strata and characteristics of igneous in this region. The following three aspects in terms of ore genesis were put much emphasis on:the conditions and stress fields of metallotectonics, the discussion of metallogenic zoning via the relationship between the distribution, forms of orebodies, and the folds of different scale, fractal features for the breccias and the genesis of brecciated ores. Thus, the metallogenic regularity has been summarized and genetic model has been built.Good effects were obtained when applying the multi-elements anomalies of tectonogeochemistry method in southern Fenghuangshan deposit. Also, the validity of Transient Electromagnetic Method, High Frequency Magnetotelluric Sounding Survey and High-precision Magnetic Survey has been evaluated in this region’s mineral exploration.The synthesized prospecting criteria of geology, geochemistry and geophysics have been summarized. Furthermore, four prediction targets have been located in the deep and around Fenghuangshan Cu deposit, according to comprehensive research of geology, remote sensing, geochemistry and geophysics, and the various prospecting criteria. |
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