Peterandresenite
A variety of Minerals
What is Peterandresenite?
Peterandresenite is a very rare mineral, the first known natural hexaniobate. Its chemical formula is Mn4Nb6O19•14H2O. Its structure contains a special type of octahedron: Lindqvist ion. Peterandresenite was found in a pegmatite of the Larvik complex in Norway. It is somewhat similar to other unique niobium minerals, aspedamite and menezesite.
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Peterandresenite Localities Map
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Key Characteristics
Formation of Peterandresenite
Peterandresenite was discovered in AS Granit quarry, Tvedalen, Larvik, Vestfold, Norway.
Quick Facts
Physical Properties
- Color
- Orange
- Hardness (Mohs)
- 2 - 2.5
- Density
- 3.05 g/cm³
- Streak
- Pale orange
Chemical Properties
- Chemical Formula
- Mn4Nb6O19·14H2O
- Elements
- H, Mn, Nb, O
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