- Miniature, 4.2 x 2.7 x 1.0 cm
- Novo Horizonte, Bahia, Brazil
This ultra rare, complex metallic oxide (lead and zinc with manganese, yttrium, titanium and iron) is known only from one deposit, Nova Horizonte, Bahia, Brazil. It was approved as a species in 2013. This remarkable specimen is composed of two, very lustrous, black crystals, to 2.5 cm across, perched on a bit of matrix. It came from the large find which produced most of the known examples of this species, and is, so far as I know and have been shown, among the largest of its species. I purchased this directly in Brazil from a lot of hundreds of crystals.