AM_Gjerdingenite-Mn Formula: O34.56 K1.44 Mn1.013 (Nb2.508 Ti1.492) Si8 H16 Name: Gjerdingenite-Mn Unit cell: 14.563 13.961 7.851 90.0 117.62 90.0 , V=1414.32 Space group: C12/M1 (12)

Raade G , Chukanov N V , Kolitsch U , Mockel S , Zadov A E , Pekov I V , European Journal of Mineralogy , 16 (2004) p.979-987, Gjerdingenite-Mn from Norway - a new mineral species, in the labuntsovite group: descriptive data and crystal structure, Locality: Gjerdingselva, Lunner, Oppland, Oslo Region, Norway