Sergevanite
Chemical formula: Na<sub>15</sub>(Ca<sub>3</sub>Mn<sup>2+</sup><sub>3</sub>)(Na<sub>2</sub>Fe<sup>2+</sup>)Zr<sup>4+</sup><sub>3</sub>Si<sub>26</sub>O<sub>72</sub>(OH)<sub>3</sub>·H<sub>2</sub>O
Cabinet No. 40
Chemical formula: Na<sub>15</sub>(Ca<sub>3</sub>Mn<sup>2+</sup><sub>3</sub>)(Na<sub>2</sub>Fe<sup>2+</sup>)Zr<sup>4+</sup><sub>3</sub>Si<sub>26</sub>O<sub>72</sub>(OH)<sub>3</sub>·H<sub>2</sub>O