AM_Denningite_1 Formula: Mn1.67 Cu.33 Te4 O10 Name: Denningite Unit cell: 8.747 8.747 12.902 90.0 90.0 90.0 , V=987.13 Space group: P42/NBC (133)

Miletich R , Mineralogy and Petrology , 48 (1993) p.129-145, Copper-substituted manganese-denningites,, Mn(Mn1-xCux)(Te2O5)2(0<=x<=1): synthesis and crystal chemistry, Locality: synthetic, Sample: x = 0.33