The study of phosphate minerals consisted of understanding the crystallization of Fe3+, Al3+, La3+ and Nd3+ phosphates in aqueous solutions at a range of temperatures (5-220 °C) with the purpose of evaluating the role of these minerals in aqueous phosphate availability in natural waters.
Roncal-Herrero, T., Rodriguez-Blanco, J.D., Benning, L.G., Oelkers, E.H. (2009) Precipitation of Iron and Aluminum Phosphates Directly from Aqueous Solution as a Function of Temperature from 50 to 200°C. Crystal Growth & Design, 9, 5197-5205. doi: 10.1021/cg900654m. [PDF]
Roncal-Herrero, T., Rodriguez-Blanco, J.D., Oelkers, E.H. and Benning, L.G. (2011) The direct precipitation of rhabdophane (REEPO4·nH2O) nano-rods from acidic aqueous solutions at 5 to 100 °C. Journal of Nanoparticle Research, 13, 4049-4062. doi: 10.1007/s11051-011-0347-6. [PDF]