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Arfvedsonite, Feldspar Group

Arfvedsonite : [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2, Feldspar Group
minID: 58Q-CP6

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A novelty at Expominer (Barcelona) 2011 and also a novelty for Imilchil. Doubly terminated crystal of Arfvedsonite with its upper termination polycrystalline and the lower one with simple faces. On matrix, with Quartz and Feldspar.
Imilchil, Anti-Atlas, Morocco.
Found in 2011
Specimen size: 8.8 × 3.8 × 2.5 cm = 3.5” × 1.5” × 1.0”
Main crystal size: 7.5 × 3.1 cm = 3.0” × 1.2”

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Photo added: 15th Dec 2011

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