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The bio-barite in witherite deposits from Southern Qinling and its significance
Zhicheng Lü;  Congqiang Liu;  Jiajun Liu;  Fengchang Wu
2004
Source PublicationProgress in Natural Science
Volume14Issue:10Pages:889-895
Abstract

Being stratiform or stratoid, the Huangboshuwan witherite deposit at Zhiyang and the Wenyuhe witherite-barite deposit at Zhushan occur in the lower Lower Cambrian siliceous rocks and the orebodies are remarkably controlled by lithological character and petrography. Carbon and oxygen isotopic studies of witherite, barytocalcite and calcite have shown that the carbon, involved in the formation of these minerals, was derived largely from organic carbon resultant from degradation, polycondensation and dehydroxylation of bio-organic matter in sediments at the early stage of diagenesis. Extensive occurrence of bio-barite strongly evidenced that Ba2+ was concentrated and settled down in the form of bio-barite on the seafloor as a result of biological processes, thereafter forming the initially enriched orebodies of barium deposits. The witherite was metasomatic products of bio-barite under the action of sulfate-reducing bacteria and organic and inorganic reduction.

KeywordBio-barite carbon And Oxygen Isotopes early Diagenesis witherite Deposits
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8267
Collection环境地球化学国家重点实验室
Affiliation1.Development and Research Center , China Geological Survey , Beijing, 100037, China
2.Institute of Geochemistry, Chinese Academy of Sciences , Guiyang, 550002, China
Recommended Citation
GB/T 7714
Zhicheng Lü;Congqiang Liu;Jiajun Liu;Fengchang Wu. The bio-barite in witherite deposits from Southern Qinling and its significance[J]. Progress in Natural Science,2004,14(10):889-895.
APA Zhicheng Lü;Congqiang Liu;Jiajun Liu;Fengchang Wu.(2004).The bio-barite in witherite deposits from Southern Qinling and its significance.Progress in Natural Science,14(10),889-895.
MLA Zhicheng Lü;Congqiang Liu;Jiajun Liu;Fengchang Wu."The bio-barite in witherite deposits from Southern Qinling and its significance".Progress in Natural Science 14.10(2004):889-895.
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