### Using correlation and multivariate statistical analysis to identify hydrogeochemical processes affecting the major ion chemistry of waters: a case study in Laoheba phosphorite mine in Sichuan, ChinaUsing correlation and multivariate statistical analysis to identify hydrogeochemical processes affecting the major ion chemistry of waters: a case study in Laoheba phosphorite mine in Sichuan, China

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 Author Wu, Jianhua ♦ Li, Peiyue ♦ Qian, Hui ♦ Duan, Zhao ♦ Zhang, Xuedi Source SpringerLink Content type Text Publisher Springer Berlin Heidelberg File Format PDF Copyright Year ©2013 Language English
 Subject Domain (in DDC) Natural sciences & mathematics ♦ Earth sciences Subject Keyword Hydrogeochemistry ♦ Groundwater resources ♦ Major ion chemistry ♦ Water–rock interaction ♦ Mineral weathering ♦ Earth Sciences Abstract Prior to mining, the water in and around the mine is rarely influenced by human activities, and hydrogeochemical processes are the major factors influencing and controlling water chemistry. To identify these natural hydrogeochemical processes in Laoheba phosphorite mine (Sichuan Province, China), correlation and multivariate statistical techniques were used. Results show that water quality in the area is generally good before the Laoheba phosphorite mine goes into construction and production. The cluster analysis classified water samples into 4 clusters (C1–C4). Samples from C1 and C2 are of HCO$_{3}$−Ca·Mg and HCO$_{3}$−Ca type, while those from C3 and C4 are of HCO$_{3}$−Ca·Mg type. Most parameters except Cl$^{−}$ and pH show an increasing trend in the order of C1 to C4. Three principal components were extracted, and PC1 represents the ion exchange and the weathering of calcite, dolomite, and silicate minerals. PC2 and PC3 indicate the process of water recharge from upstream waters and the process of evaporation, respectively. The hydrochemistry of waters in the area is a result of multiple factors, and natural mineral weathering and ion exchange are the most important ones. ISSN 18667511 Age Range 18 to 22 years ♦ above 22 year Educational Use Research Education Level UG and PG Learning Resource Type Article Publisher Date 2013-08-25 Publisher Place Berlin, Heidelberg e-ISSN 18667538 Journal Arabian Journal of Geosciences Volume Number 7 Issue Number 10 Page Count 10 Starting Page 3973 Ending Page 3982