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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/18000

Title: The use of a combined portable X ray fluorescence and multivariate statistical methods to assess a validated macroscopic rock samples classification in an ore exploration survey
Authors: Figueroa-Cisterna, Juan
Bagur-González, María Gracia
Morales-Ruano, Salvador
Carrillo-Rosúa, Javier
Martín-Peinado, Francisco
Issue Date: 15-Oct-2011
Abstract: The combination of “ex situ” portable X ray fluorescence with unsupervised and supervised pattern recog-nition techniques such as hierarchical cluster analysis, principal components analysis, factor analysis andlinear discriminant analysis have been applied to rock samples, in order to validate a “in situ” macro-scopic rock samples classification of samples collected in the Boris Angelo mining area (Central Chile),during a drill-hole survey carried out to evaluate the economic potential of this Cu deposit. The analysedelements were Ca, Cu, Fe, K, Mn, Pb, Rb, Sr, Ti and Zn. The statistical treatment of the geological datahas been arisen from the application of the Box–Cox transformation used to transform the data set innormal form to minimize the non-normal distribution of the data. From the statistical results obtained itcan be concluded that the macroscopic classification applied to the transformed data permits at least, todistinguish quite well in relation to two of the rock classes defined (70.5% correctly classified (p < 0.05))as well as for four of the five alteration types defined “in situ” (75% of the total samples).
Sponsorship: Departamento de Mineralogía y Petrología (Universidad de Granada), Departamento de Química Analítica (Universidad de Granada), Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Departamento de Didáctica de las Ciencias Experimentales (Universidad de Granada), Departamento de Edafología y Química Agrícola (Universidad de Granada)
Publisher: Elsevier
Description: El artículo original ha sido publicado por Talanta, de la Editorial Elsevier, disponible en: http://www.sciencedirect.com/science/article/pii/S0039914011006096 El enlace vía DOI es: doi:10.1016/j.talanta.2011.07.034
Keywords: Portable X ray fluorescence analyser
Box–Cox transformation
Pattern recognition techniques
Ore exploration
Cu–(Ag) deposits
URI: http://hdl.handle.net/10481/18000
ISSN: 0039-9140
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Figueroa-Cisterna, J., Bagur-González, M. G., Morales-Ruano, S., Carrillo-Rosúa, J., & Martín-Peinado, F. (2011). The use of a combined portable X ray fluorescence and multivariate statistical methods to assess a validated macroscopic rock samples classification in an ore exploration survey. Talanta, 85(5), 2307-2315. doi:10.1016/j.talanta.2011.07.034
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