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Geology and Geochemistry of the Anqing Copper Deposit in Anhui Province and Its Three-dimensional Geological Modeling

Author: XuFengMing
Tutor: DuYangSong
School: Chinese Geology University (Beijing)
Course: Deposits in the census and exploration
Keywords: Anqing Copper Mine Skarn Geochemistry Three-dimensional modeling
CLC: P618.41
Type: Master's thesis
Year: 2011
Downloads: 116
Quote: 1
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Abstract


Anqing Yangtze metallogenic belt is an important metallogenic zone . Skarn deposits in the region are widely distributed . Anqing copper deposit geology is unique, Anqing representative and larger skarn iron and copper deposits . This article has been Anqing Copper deposit geology, rock ( ore ) Petrographic and geochemical studies, and on this basis, analyzes the genesis . While taking advantage of three-dimensional software Micromine Anqing Copper Mine on a 3D geological modeling and visualization from the perspective of the formation, structure , magmatic rocks and ore body relationship . Through the above work and made the following main achievements and awareness. 1, the field geological observations suggest that Anqing copper and iron ore deposits and skarn mineralization has obvious zonation from carbonate rock to diorite bodies were marble, diopside skarn ( iron mineralization ) , garnet diopside skarn ( iron mineralization , a small amount of copper ) , garnet skarn ( iron- copper mineralization ) , plagioclase diopside skarn ( mainly copper mineralization ) , diopside petrochemical diorite ( a small amount of copper mineralization ) and diorite . 2 , geochemical studies show that close Anqing Copper diorite by crust-mantle magma crystallization occurs with differentiation of the product. U-Pb zircon geochronology studies have shown that at least Anqing Mesozoic magmatism occurred in two , the first phase at 139 Ma, formed mainly of quartz diorite , the second phase in 123Ma, formed mainly diorite . 3 , REE geochemical analysis results show that the REE characteristics of skarn controlled mainly by garnet . Meanwhile, the district skarn formed at high temperature under oxidizing conditions , and the ore-forming fluids mainly derived from magmatic hydrothermal . 4 , three-dimensional visualization studies have shown that there are two distinct eastern rock concealed buildups , ore is mainly produced in the 1st Longnan side concealed rock and ore generally northeastward tilt, mineralization zoning obvious. Meanwhile , F1 fault is a normal fault , the main ore body faulted to 1 and the 2nd two orebodies. The overall performance of a strata overturned anticline , overturned limb has been eroded , the normal wing form a shield structure is conducive to the conduct of mineralization .

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CLC: > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Non-ferrous metals > Copper
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