AM_Kristiansenite Formula: Ca4 Sn2.07 Fe.41 Sc1.52 Si8 O28 H2 Name: Kristiansenite Unit cell: 10.028 8.408 13.339 90.01 109.1 90.0 , V=1062.77 Space group: C1 (1)

Ferraris G , Gula A , Ivaldi G , Nespolo M , Raade G , Zeitschrift fur Kristallographie , 216 (2001) p.442-448, Crystal structure of kristiansenite: a case of class IIB twinning by metric merohedry, Locality: amazonite pegmatite, Heftetjern, Tordal, Telemark, Norway