AM_Crookesite
Formula: Tl Cu7 Se4
Name: Crookesite
Unit cell: 10.45 10.45 3.9708 90.0 90.0 90.0 , V=433.62
Space group: I14/M1 (1)

Eriksson L , Werner P E , Berger R , Meerschaut A , Journal of Solid State Chemistry , 90 (1991) p.61-68, Structure refinement of TlCu7Se4 from X-ray powder profile data, Locality: synthetic, Sample: GH, Note: Cell parameters are an average of Table 1 values