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Petrochemical Characteristics and Genesic Significance of Luodian Jade from Guizhou Province
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摘要

///Petrochemical characteristics of Luodian Jade from Guizhou Province were studied by using XRF, ICP-MS and conventional chemical analysis. Analysis of trace elements shows that the formation of white jade series and green jade series is affected by different trace element associations, especially, Cr-V, Co-Ni and Mn-Sr. It is indicated that Cr and V ions in chemical composition are responsible for the green color of Luodian Jade. Moreover, REE analysis of Luodian Jade revealed abnormal characteristics in 3Ce and 3Eu, and chondrite- normalized REE distribution pattern is similar to that of the surrounding rock of diabase and limestone. On the basis of petrochemical characteristic study of Luodian Jade, it is considered that Luodian Jade is a new type of nephrite jade formed in a long term contact metasomatism between the limestone and gas-liquid fluid brought by diabase intrusion.

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