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textjournalArticleVroegeG.J.autThies-WeesieD.M.E.autPetukhovA.V.autLemaireB.J.autDavidsonP.autOptical Bragg reflections and small-angle X-ray scattering (see figure) reveal that dispersions of Goethite (FeOOH) nanorods spontaneously form layered (smectic A) structures, although their 55% length polydispersity exceeds the theoretical limit by a factor of three. Here, sedimentation and size partitioning contribute to a very rich phase behavior including nematic and columnar phases. This suggests the application of the self-organizing tendencies of such mineral liquid crystals to obtain materials with very diverse nanostructures.journal1819256525682006continuing0935-9648