Citation: Mills, S. J.; Kampf, A. R.; Sejkora, J.; Adams, P. M.; Birch, W. D.; Plasil, J. (2011). Iangreyite: a new secondary phosphate mineral closely related to perhamite. Mineralogical Magazine, 75, pp. 327-336.
Formula: Al7 Ca2 H33 O39 P4
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Al7 O31 P4 (Al7 O31 P4)
Multiplicity: 1