Experiments on the simultaneous partitioning of divalent metal ions between spinel group minerals (spinel and magnetite) and 2M aqueous chloride solutions under supercritical conditions

摘要: The partitioning of Mg2+, Mn2+, Fe2+, Co2+, Ni2+ and Zn2+ between spinel group minerals (spinel magnetite) 2M aqueous chloride solutions was experimentally investigated in the temperature range 500 to 800°C, 1 kb. experimental results were analyzed thermodynamically taking into consideration speciation.The partition coefficient - ionic radius (PC-IR) diagrams are drawn based on results. PC-IR curve for magnetite is parabola-shaped with a maximum Co2+ whereas deviate from such trend. anomaly may be attributable their tetrahedral octahedral site preferency, respectively. becomes gentle increasing temperature. This means that element weak On other hand, shows but no unlike case magnetite. because occurs spinel.