Resumen de Evolución química de las salmueras del Salar de Huasco (Chile) en condiciones experimentales controladas
Pedro L. López Julián, Ingrid Garcés Millas
Evaporation process affecting surficial brines in salar of Huasco (Chile) saline system has been reproduced in laboratory with the main objective of studying its chemical evolving path. This experimental device has been carried out since a previous descriptive work has showed that the evolution of surficial brines present in salar could not be explained only considering a simple process of evaporative concentration (L¿opez et al., 1999). The dilute initial solucion has evaporated under isothermal conditions. Density of solutions reaches values up to 1.30 gr/cm3, with ionic strength levels near to 10 molal. Solid samples analysed have shown the progressive precipitation of calcite, gypsum, thenardite, and halite. The evolution of chemical concentration of solutions reflects this mineral sequence.
