Citation: Origlieri, M. J.; Yang, H.; Downs, R. T.; Posner, E. S.; Domanik, K. J.; Pinch, W. W. (2012). The crystal structure of bartelkeite, with a revised chemical formula, PbFeGeVI(GeIV2O7)(OH)2*H2O, isotypic with high-pressure P21/m lawsonite. American Mineralogist, 97, pp. 1812-1815.