A geographic expression of the sepiolite-palygorskite continuum in soils of northwest South Africa Francis, Michele Louise ; Majodina, Thando Olwethu ; Clarke, Catherine E. Abstract Publication: Geoderma Pub Date: December 2020 DOI: 10.1016/j.geoderma.2020.114615 Bibcode: 2020Geode.37914615F