AM_Effenbergerite_8 Formula: Ba Cu Si4 O10 Name: Effenbergerite Unit cell: 7.4409 7.4409 16.1367 90.0 90.0 90.0 , V=893.44 Space group: P4/NCC (130)

Chakoumakos B C , Fernandez-Baca J A , Boatner L A , Journal of Solid State Chemistry , 103 (1993) p.105-113, Refinement of the structures of the layer silicates MCuSi4O10 (M=Ca,Sr,Ba), by Rietveld analysis of neutron powder diffraction data, Note: gillespite structure, Locality: synthetic