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- Availability
- Sold
- Locality
- Norra Kärr, Gränna, Jönköping, Småland, Sweden
- Formula
- NaNa2(Fe2+4Al)Si8O22(OH)2
- Size
- 4.5 x 4 x 1.8 cm - Miniature
Dark green prismatic crystals embedded in a matrix with other amphiboles, namely Fluoro-leakite. Both of these minerals are members of a huge supergroup and are basically sodium amphiboles, a rock-forming mineral.