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《Journal of Changchun University of Science and Technology》 2002-03
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THE CHARACTERISTICS OF ORE-FORMING FLUID OF DONGGUASHAN STARATA- BOUND SKARN Cu DEPOSIT AND ITS SIGNIFICANCE FOR DEPOSIT GENESIS

LING Qi cong 1,2 , LIU Cong qiang 1 (1. Laboratory for Study of the Earth's Interior and Geofluis, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002,China;2. China University of Geosciences, Wuhan 430074,China)  
Comprehensive studies were made for fluid inclusions in minerals of Dongguashan strata-bound skarn deposit. It is demonstrated that the ore forming fluid is a high temperature (350~400℃), high density (larger than 1.1 g/cm 3 ) and high salinity (13.45%~48% NaCl) hydrothermal fluid. The fluid is also characterized by obvious fractionation of REE, enriched in LREE and strong negative Eu anomaly. The ore forming process took place under relative acidic and reductive conditions. The fluid transported as isothermal process under a particularly ore forming environment. It is postulated that the ore forming fluid was suplied by both magmatic and strata sources. The Dongguashan deposit is a typical multi source of ore forming materials, multi ore forming stages and multi controllong factors strata bound skarn deposit.
【Fund】: 国家“九五”攀登预选项目 (95预 39);; 国家自然科学基金重点项目(496 3312 0 );; 国家杰出青年科学家基金项目 (496 2 5 30 4 )
【CateGory Index】: P618.41
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