Bicapite
Chemical formula: [KNa<sub>2</sub>Mg<sub>2</sub>(H<sub>2</sub>O)<sub>25</sub>][H<sub>2</sub>PV<sup>5+</sup><sub>12</sub>O<sub>40</sub>(V<sup>5+</sup>O)<sub>2</sub>]
Cabinet No. 40
Chemical formula: [KNa<sub>2</sub>Mg<sub>2</sub>(H<sub>2</sub>O)<sub>25</sub>][H<sub>2</sub>PV<sup>5+</sup><sub>12</sub>O<sub>40</sub>(V<sup>5+</sup>O)<sub>2</sub>]