Bobshannonite
Fórmula química: Na<sub>2</sub>KBa(Mn<sup>2+</sup>,Na)<sub>8</sub>(Nb<sup>5+</sup>,Ti<sup>4+</sup>)<sub>4</sub>(Si<sub>2</sub>O<sub>7</sub>)<sub>4</sub>O<sub>4</sub>(OH)<sub>4</sub>(O,F)<sub>2</sub>
Cabinet No. 40
Fórmula química: Na<sub>2</sub>KBa(Mn<sup>2+</sup>,Na)<sub>8</sub>(Nb<sup>5+</sup>,Ti<sup>4+</sup>)<sub>4</sub>(Si<sub>2</sub>O<sub>7</sub>)<sub>4</sub>O<sub>4</sub>(OH)<sub>4</sub>(O,F)<sub>2</sub>