SANS data were fitted using the open source SASView software package (www.sasview.org) using a model for particles with an oblate spheroid platelet geometry. SAXS data were analysed using the ATSAS software package (https://www.embl-hamburg.de/biosaxs/software.html); seven cycles of a simulated annealing routine in DAMMIF were averaged and filtered, before passing the filtered system through a final refinement in DAMMIN.The neutron and X-ray diffraction data can be modelled using EPSR, more details of which can be found here: https://www.isis.stfc.ac.uk/Pages/Empirical-Potential-Structure-Refinement.aspx The raw uncorrected neutron diffraction data can also be downloaded from DOI: 10.5286/ISIS.E.RB1620292 and 10.5286/ISIS.E.RB1620479