(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
| Brazil | |
- Serro (old Serro Frio or Cerrado Frio)
| No reference listed | | Guinea | | |
| Pavel Kartashov. | | Russia | | |
| V.V. Seredin data |
|