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SR/BA RATIO ZONING OF MAGNESIUM SKARN DEPOSITS THE SANPU AREAS,HUAIBEI,ANHUI

FANG Zhao-xing, SUN Qin-an,ZHU Hen (No.325 Geological Part of Bureau of Geology and Mineral Resources Exploration of Anhui Province , Huaibei 235037 China )  
Gold-bearing megnesium skarn deposit is very rare in the world. This paper briefly introduced basic ore-forming geological conditions, megnesium-abundance features and metasomatic mineralization alteration zoning model of the gold-bearing polymetallic megnesium skarn deposit in the Sanpu area, Huaibei, Anhui, focused on study of the migration law of Sr and Ba elements and Sr/Ba ratio zoning in the deposit, on the basis of study of a great amount of analytical data, discussed Sr and Ba migrating with Ca and K respectively, discovered Ba migrating from inner zone to outer and Sr in the contrary, firstly pointed out the Sr/Ba ratio zoning of the megnesium skarn deposit, determined Sr/Ba ratio 0.3-3.0 to be mineralizaion metamatic alteration zone, which can be a significant geochemical ore-prospecting indicator for megnesium skarn deposit.
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