AM_Mn-foitite_2 Formula: Na.737 Ca.022 K.003 Al7.305 Mn1.161 Li.573 Ti.039 B3 Si5.922 F.429 O30.571 H3.382 Name: Mn-foitite Unit cell: 15.9303 15.9303 7.1341 90.0 90.0 120.0 , V=1567.90 Space group: R3M (160)

Bosi F , Agrosi G , Lucchesi S , Melchiorre G , Scandale E , American Mineralogist , 90 (2005) p.1661-1668, Mn-tourmaline from island of Elba (Italy): Crystal chemistry., Sample: sl2x