Nickeltsumcorite
Fórmula química: Pb<sup>2+</sup>(Ni<sup>2+</sup>,Fe<sup>3+</sup>)<sub>2</sub>(As<sup>5+</sup>O<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O,OH)<sub>2</sub>
Cabinet No. 40
Fórmula química: Pb<sup>2+</sup>(Ni<sup>2+</sup>,Fe<sup>3+</sup>)<sub>2</sub>(As<sup>5+</sup>O<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O,OH)<sub>2</sub>