- Aragonite (Var: Plumboan Aragonite)
- Miniature, 4.8 x 3.4 x 2.4 cm
- Touissit, Touissit District, Oujda-Angad Province, Oriental Region, Morocco
Tarnowitzite is the familiar name for plumboan (lead-rich) aragonite (which of course is a polymorph of calcite). It is uncommon, good crystals being known from under 10 localities worldwide (including Tsumeb). This specimen from Morocco is unusually aesthetic for the species, with sharp, glistening crystals jutting up from schist matrix. Ex. Jaime Bird Collection.