Franckeite (Var: PotosÃite) with Franckeite
sold- Locality
- San Jose Mine, Cercado Province, Oruro City, Oruro Dept., Bolivia
- Minerals
- Franckeite
- Dimensions
- 5 x 4 x 2.5 cm
- Size class
- Miniature
- SID
- K125
A fine example of the rare sulfosalt species, Franckeite, covered with crystals of 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. There are large, flat individual crystals on this specimen to 6 x 6mm. A rare specimen.