- Aragonite (Var: Plumboan Aragonite)
- Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
- Cabinet, 14.5 x 9.2 x 8.4 cm
Tarnowitzite is a rare lead-rich varietal of aragonite (it is also called plumboan aragonite), here represented in a large, rich, striking and actually rather PRETTY specimen from the classic Tsumeb locality. Tarnowitzite is actually a mixture of aragonite and cerussite. The crystals here are not only superbly formed, but EXTREMELY lustrous; they stretch completely across the matrix from side to side.