A~~~-~erni~ Asiatic of B in synthetic melts of hapl~~tic composition have been measured by the diffusion couple technique at 1 atm between 1200-1600°C. The compositional profiles were measured by ion microprobe and modelled using the Boltzmann-Matano formalism to retrieve compositionally dependent interdiffision coefficients. At the experimental conditions, &OS is found to exchange primarily wi...

This study aims to contribute improve the knowledge on setting of Irbiben granites, located south gold deposit this locality (Tagragra d'Akka buttonhole, Anti-Atlas, Morocco). The petrographic characterization showed leucocratic porphyry rocks, with a mineralogy dominated by quartz and phenocrysts plagioclase, alkali feldspars sometimes centimetric size as well very small sulphides metallic lus...

background: the superiority of either of body mass index (bmi), waist circumference (wc), waist-to-hip ratio (whr) and waist-to-height ratio (whtr) for prediction of metabolic syndrome (mets) is remained controversial in asian population. the objective of this study was to compare the discriminative capacity of either of these measures in prediction of non-adipose components of mets. methods: i...

Shihuiyao Rb–Nb–Ta-rich granites from the Late Jurassic period are newly discovered rare-metal-bearing found in southern Great Xing’an Range, NE China. Further research of these may contribute to better understanding petrogenesis rare-metal and their associated mineralization mechanisms. The high-silica (SiO2 = 73.66–77.08 wt%), alkali-rich (K2O + Na2O 8.18–9.49 wt%) weakly mildly peraluminous ...