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Mineral contains: norrishite
Eggleton R A, Ashley P M (1989) Norrishite, a new manganese mica, K(Mn3+2Li)Si4O12, from the Hoskins mine, New South Wales, Australia. American Mineralogist 74, 1360-1367
Gnos E, Armbruster T, Villa I M (2003) Norrishite, K(Mn32+Li)Si4O10(O)2, an oxymica associated with sugilite from the Wessels Mine, South Africa: Crystal chemistry and 40Ar-39Ar dating. American Mineralogist 88, 189-194
Rieder M, Cavazzini G, DYakonov Y S, Frank-Kamenetskii V A, Gottardt G, Guggenheim S, Koval P V, Muller G, Neiva A M R, Radoslovich E W, Robert J L, Sassi F P, Takeda H, Weiss Z, Wones D R (1998) Nomenclature of the micas. The Canadian Mineralogist 36, 905-912
Tyrna P L, Guggenheim S (1991) The crystal structure of norrishite, KLiMn3+2Si4O12: an oxygen-rich mica. American Mineralogist 76, 266-271