A very interestingly shaped hollandite manganese oxide specimen from Morocco. It is very difficult to visually distinguish between manganese oxides, this specimen has been analyzed in a laboratory.
A very interestingly shaped hollandite manganese oxide specimen from Morocco. It is very difficult to visually distinguish between manganese oxides, this specimen has been analyzed in a laboratory.
| Weight | 352 g |
|---|---|
| Dimensions | 45 × 75 × 140 mm |
