Franckeite (Var: PotosÃite) with Franckeite
at-auction$ 20
- Locality
- San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia
- Minerals
- Franckeite
- Dimensions
- 3.5 x 2.9 x 2.0 cm
- Size class
- Miniature
- SID
- J574
A fine example of the rare sulfosalt species, Franckeite, with radiating spear-shaped crystals and what was formerly known as
Potosiite (now discredited). Potosiite is the variety of Franckeite that is tin-poor in its chemistry with crystals more tabular
in shape. A rare specimen.