AM_Manganotantalite
Formula: (Mn.97 Ti.02 Fe.01) (Ta1.28 Nb.72) O6
Name: Manganotantalite
Unit cell: 14.413 5.76 5.084 90.0 90.0 90.0 , V=422.07
Space group: PBCN (60)

Grice J D , Ferguson R B , Hawthorne F C , The Canadian Mineralogist , 14 (1976) p.540-549, The crystal structures of tantalite, ixiolite and wodginite, from Bernic lake, Manitoba I. Tantalite and ixiolite, Locality: Bernic lake, Manitoba, Canada