Citation: Nyfeler, D.; Armbruster, T.; Dixon, R.; Bermanec, V. (1995). Nchwaningite, Mn2SiO3(OH)2.H2O, a new pyroxene-related chain silicate from the N'chwaning mine, Kalahari manganese field, South Africa. American Mineralogist, 80, pp. 377-386.
Formula: Al0.012 Ca0.008 Fe0.008 H4 Mg0.106 Mn1.85 O6 Si