Active Aluminum in Kuroboku Soils and Nonand Para-Crystalline Clay Minerals

Abstract

Recent advances in the study of non-and para-crystalline clay minerals have brought about a better understanding of the chemical bonding and functions of active Aluminum not only in these minerals but in other components of Kuroboku soils. The former minerals are allophane and imogolite, and the latter components Al-humus complexes and allophanelike constituents. Their genesis-transformation, structural chemistry and functions in ion exchange and specific adsorption were discussed and correlated on the basis of avail-able data.