M. M. Qurashi, W. H. Barnes; The structures of the minerals of the descloizite and adelite groups; IV, Descloizite and conichalcite (part 2), the structure of conichalcite. The Canadian Mineralogist ; 7 (4): 561–577. doi:
"The structure consists of a three-dimensional assemblage of distorted AsO 4 tetrahedra, CuO 4 (OH) 2 tetragonal bipyramids, and CaO 7 (OH) square antiprisms, sharing corners and edges. The possible significance of the two types of bond lengths in the AsO 4 group is discussed."