Multistage pyrites in the Nibao disseminated gold deposit, southwestern Guizhou Province, China: Insights into the origin of Au from textures, in situ trace elements, and sulfur isotope analyses

2020 ◽  
Vol 122 ◽  
pp. 103446 ◽  
Author(s):  
Dong-Tian Wei ◽  
Yong Xia ◽  
Daniel D. Gregory ◽  
Jeffrey A. Steadman ◽  
Qin-Ping Tan ◽  
...  
Keyword(s):  
Trace Elements ◽  
Gold Deposit ◽  
Sulfur Isotope ◽  
Guizhou Province ◽  
Southwestern Guizhou ◽  
Southwestern Guizhou Province ◽  
Isotope Analyses

scholarly journals Iron Isotope Constraints on the Mineralization Process of Shazi Sc-Rich Laterite Deposit in Qinglong County, China

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 737
Author(s):  
Jun Sun ◽  
Yunlong Liu ◽  
Xiqiang Liu
Keyword(s):  
Large Scale ◽  
Isotope Composition ◽  
Guizhou Province ◽  
Iron Isotope ◽  
Fe Content ◽  
Southwestern Guizhou ◽  
Southwestern Guizhou Province ◽  
Hydrolysis Of ◽  
Range Of Variation

The Shazi deposit is a newly discovered, potential large-scale scandium deposit located in Qinglong, southwestern Guizhou Province, China. The iron isotopic composition of magnetite in fresh basalt, weathered basalt, and mineralized laterite was investigated. The Fe content of fresh basalt and of weathered basalt vary from 15.41 wt.% to 15.51 wt.% and from 14.60 wt.% to 15.12 wt.%, respectively, while the δ56Fe of magnetite varies from 0.23‰ to 0.29‰ and from 0.02‰ to 0.07‰. Laterite has the highest Fe content, in the range of 23.53%~28.95%, but δ56Fe is similar to weathered basalt, and the range of variation is −0.09‰–0.03‰. The change in iron isotope composition in weathered basalt and laterite is related to the hydrolysis of clinopyroxene. Combined with the existing research results, the genesis of scandium deposit is considered to be related to in situ hydrolysis in deep and surface weathering leaching of Emeishan basalt.

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