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Qualitative and quantitative phase analyses of Pingguo bauxite mineral using X-ray powder diffraction and the Rietveld method

2007; Cambridge University Press; Volume: 22; Issue: 4 Linguagem: Inglês

10.1154/1.2790941

1945-7413

Liangqin Nong, Xiying Yang, Lingmin Zeng, Jinping Liu,

Clay minerals and soil interactions

X-ray powder diffraction technique and the Rietveld refinement method have been used successfully for the qualitative and quantitative analyses of Pingguo bauxite from Guangxi, China. Qualitative phase analysis shows that the Pingguo bauxite contains diaspore (AlOOH), hematite (Fe 2 O 3 ), goethite (FeOOH), anatase (TiO 2 ), and kaolinite (Al 2 (Si 2 O 5 )(OH) 4 ). Quantitative Rietveld refinement shows that the weight concentrations of diaspore, goethite, hematite, anatase, and kaolinite for the Pingguo bauxite are 71.9(4)%, 7.0(8)%, 11.3(7)%, 6.5(6)%, and 3.3(9)%, respectively.