Citation: Bindi, L.; Tredoux, M.; Zaccarini, F.; Miller, D. E.; Garuti, G. (2014). Non-stoichiometric nickel arsenides in nature: The structure of orcelite, Ni5-xAs2 (x = 0.25), from the Bon Accord oxide body, South Africa. Journal of Alloys and Compounds, 601, pp. 175-178.