Citation: Kampf, A. R.; Mills, S. J.; Nash, B. P.; Dini, M.; Donoso, A. A. M. (2015). Tapiaite, Ca5Al2(AsO4)4(OH)4*12H2O, a new mineral from the Jote mine, Tierra Amarilla, Chile. Mineralogical Magazine, 79, pp. 345-354.
Formula: Al2 As4 Ca5 H28 O32
List type: interleaving
List: 1D
Basis: (0;1;0)
Dimensionality: 1
Formula: Al2 As2 O12 (Al As O6)
Multiplicity: 1