AM_Franciscanite
Formula: Mn3 V.5 Si O7 H3
Name: Franciscanite
Unit cell: 8.1518 8.1518 4.8091 90.0 90.0 120.0 , V=276.76
Space group: P113 (1)

Pertlik F , Neues Jahrbuch fur Mineralogie, Monatshefte , 1986 (1986) p.493-499