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《GEOCHIMICA》 1996-05
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GEOCHEMICAL CHARACTERISTICS OF THE PRECAMBRIAN BARITIC ROCK IN MIANNING, SICHUAN PROVINCE

Ni Zhiyao(Chengdu institute of Technology, Chengdu 610059) Mo Huaiyi(No. 109 Team, Sichuan Bureau of Geology and Mineral Resources, Mianning 615602)  
The ore-bearing baritic rock is an important hydrothermal sedimentary rock belonging to Precambrian Youheimu Group, in Mianning, Sichuan Province. Its REE pattern is featured by lower total REE with enrichment of LREE, obvously negative Eu and weakly negative Ce anomaly. The contents of trace elements are comparatively low and the δ34S of the baritic rock are quite similar to those of contemporaneous suphate deposited from sea water.The baritic rock was formed under moderate to low temperature, weakly alkaline and weak oxidation conditions through high-speed hot water sedimentation.
【Fund】: 国家"八五”科技攻关项目,地质矿产部“八五”科技攻关项目
【CateGory Index】: P588.2
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