AM_Tantite
Formula: (Ta2.94 Sc.06) O7.5
Name: Tantite
Unit cell: 3.81 3.81 35.764 90.0 90.0 90.0 , V=519.15
Space group: I121 (5)

Stephenson N C , Roth R S , Journal of Solid State Chemistry , 3 (1971) p.145-153, The crystal structure of the high temperature form of Ta2O2, Locality: synthetic