Citation: Roberts, A. C.; Burns, P. C.; Gault, R. A.; Criddle, A. J.; Feinglos, M. N. (2004). Petewilliamsite, (Ni,Co)30(As2O7)15, a new mineral from Johanngeorgenstadt, Saxony, Germany: description and crystal structure. Mineralogical Magazine, 68, pp. 231-240.