Comparison studies of tin deposits (Priamurye, Russia) using the Aitchison’s methodology

A study of tin deposits from Priamurye (Russia) is performed to analyze the differencesbetween them based on their origin and also on commercial criteria. A particularanalysis based on their vertical zonality is also given for samples from Solnechnoedeposit. All the statistical analysis are made on the subcomposition formed by seventrace elements in cassiterite (In, Sc, Be, W, Nb, Ti and V) using the Aitchison’methodology of analysis of compositional data

J. Putin i la nova Rússia

Conté: El enigma Putin; El giro político de Rusia; Rusia, hacia la autocracia; La tragedia de Beslan; La Rusia de Putin y Occidente; El golpe de fuerza de Rusia; La Rusia del gigante Gazprom; El rearme de Rusia