Sections of black åskagenite-(Nd) in feldspar, from the type locality
BO_146
1 Item
Data sheet
- Locality
- Åskagen pegmatite, Värmland, Sweden
- Size category
- Miniature
- Size (cm)
- 4x2.5x2.5
- Weight
- 30 g
- Formula
- [Mn2+Nd][Al2Fe3+](Si2O7)(SiO4)O2
- Properties
- Black - brownisk black; slightly radioactive