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Volume 8 Issue 2 - March 2017

  • 1. Geochemical and mineralogical studies of crystalline limestone occurred near podupatti village of ettayapuram taluk, tamil nadu

    Authors : Jayant Kumar Padhi, Amar Kumar Mishra, Sadasiba Jena, Dr. G.r. Senthil Kumar

    Pages : 280-288

    DOI : http://dx.doi.org/10.21172/1.82.037

    Keywords : Crystalline limestone, Calc-gneiss, Charnockite, Geochemistry, XRF and XRD.

    Abstract :

    The present study deals with the chemical and mineralogical measurements of the crystalline limestone and its country rocks occurred in the study area. The limestone band consists pink and greyish-white limestones and the country rocks calc-gneiss and charnockite. The geochemical and the mineralogical studies were conducted in the limestone and the country rocks with the help of XRF and XRD instruments. The oxide and element concentrations were assessed with the help of XRF and the minerals were studied with XRD. The XRF result demonstrates that the pink limestone consists CaO of 51.15% and the greyish-white consist 52.00%. The SiO2 is 10.19 and 9.69% in pink and greyish-white limestone respectively. Apart from them, four major oxides were reported, which are Fe¬2O3, Na2O, Al2O3 and MgO. All together they account for 5.21% in pink limestone and 3.98% in greyish-white limestone. The elemental concentration reveals that Ca in higher level and followed by Si. In the country rocks, Si Wt% is high and followed by Ca and Fe. According to XRD result, the pink limestone contains about 80.3% of calcite and 19.7% of quartz minerals, whereas in greyish-white limestone about 68.4% of calcite, 21.2% of diopside and 10.4% of quartz minerals. The country rock calc-gneiss loaded with silica (50.85%), Al2O3 (18.15%) and CaO (16.25%). In charnockite, the major oxides are SiO2 (45.60%), Fe2O3 (15.12%), Al2O3 (10.84%), Na2O (10.12%) and (9.14%). The study area limestone is dominated by calcite mineral, along with quartz and diopside.

    Citing this Journal Article :

    Jayant Kumar Padhi, Amar Kumar Mishra, Sadasiba Jena, Dr. G.r. Senthil Kumar, "Geochemical and mineralogical studies of crystalline limestone occurred near podupatti village of ettayapuram taluk, tamil nadu", Volume 8 Issue 2 - March 2017, 280-288

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