On low-CEC soils (less than 5 meg/20000g), for example, some leaching of cations can occur. Fall applications of ammonium N and potassium on these soils could result in some leaching below the root ...
and the B-cation a 6-fold oxygen coordination. In the example shown below, (SrTiO3, download cif) the Sr atoms sit in the 12 coordinate A site, while the Ti atoms occupy the 6 coordinate B site. There ...