Significance of saturation index of certain clay minerals in shallow coastal groundwater,in and around Kalpakkam,Tamil Nadu,India |
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| Authors: | S CHIDAMBARAM U KARMEGAM P SASIDHAR M V PRASANNA R MANIVANNAN S ARUNACHALAM S MANIKANDAN P ANANDHAN |
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| Institution: | 1.Department of Earth Sciences,Annamalai University,Annamalai Nagar,India;2.Indira Gandhi Centre for Atomic Research,Kalpakkam,India;3.Department of Applied Geology School of Engineering and Sciences,Curtin University,Bentley,Australia;4.NRSC Data Centre,Hyderabad,India |
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| Abstract: | The saturation index of clay minerals like Gibbsite, Kaolinite, Illite, Montmorillonite and Chlorite in groundwater were studied
in detail by collecting 29 groundwater samples from the shallow coastal aquifers in and around Kalpakkam. The samples collected
were analysed for major cations, anions and trace elements by using standard procedures. The study reveals that pH has a significant
role in the saturation index (SI) of minerals. It also shows that the relationship of electrical conductivity to the SI of
these minerals is not significant than that of the ionic strength, log pCO2 values, and alumina silica ratio have significant relation to the SI of these clay minerals. The SI of these clay minerals
was spatially distributed to identify the areas of higher SI. Silica has good correlation to SI of Kaolinite, Gibbsite and
Montmorillonite and Al has good correlation to SI of all the minerals except to that of Chlorite. |
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