Warikahnite, (on Leiteite)

Mineral: Warikahnite, Leiteite
Chemistry: Zn3(AsO4)2.2H2O
Size: 9 x 5 x 2 mm
Owner: Liam Schofield
Photographer: Steve Rust

Specimens of leiteite recovered from the third oxidation zone are commonly associated with some of Tsumeb's rarer zinc arsenates, such that collectors of Tsumeb rarities tend to scrutinise leiteite specimens very carefully for associated mineral species. In this case, the orange-brown crystal (1 mm) intergrown with pearly-white micaceous leiteite was originally thought to be legrandite, but analysis has shown that it is, in fact, warikahnite. The specimen was formerly in the Karlheinz Grosch (Germany) collection.