- Adamite (Var: Cuprian Adamite), Adamite (Var: Cobaltoan Adamite), Willemite
- Miniature, 3.7 x 2.1 x 1.6 cm
- Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
It seems as if a matrix of calcite is overlain by radiating, acicular groups of colorless willemite; but actually the "calcite" is cobaltoan adamite which is very rare for Tsumeb. The cobalt-rich and decidedly pink adamite grades into a second generation of light green cuprian adamite, with a rare pyramidal-looking crystal form. Ex. Willy Israel Collection.