Small crystal section of black åskagenite-(Nd) from the type locality
BO_143
1 Item
Data sheet
- Locality
- Åskagen pegmatite, Värmland, Sweden
- Size category
- TN
- Size (cm)
- 1.6x1.1x1.2
- Weight
- 6 g
- Formula
- [Mn2+Nd][Al2Fe3+](Si2O7)(SiO4)O2
- Properties
- Black - brownisk black; fragile; slightly radioactive