Citation: Pekov, I. V.; Zubkova, N. V.; Yapaskurt, V. O.; Belakovskiy, D. I.; Chukanov, N. V.; Lykova, I. S.; Savelyev, D. P.; Sidorov, E. G.; Pushcharovsky, D. Y. (2014). Wulffite, K3NaCu4O2(SO4)4, and parawulffite, K5Na3Cu8O4(SO4)8, two new minerals from fumarole sublimates of the Tolbachik volcano, Kamchatka, Russia. The Canadian Mineralogist, 52, pp. 699-716.
Formula: Cs0.04 Cu3.99 K2.85 Na O18 Rb0.08 S4 Zn0.02