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RM3372   Arfvedsonite and feldspar
NaNa2(Fe2+4Fe3+)Si8O22(OH)2
#2764
Jebel Ewargizen, Tirrhist, Anemzi, Agoudim, Midelt Cercle, Midelt Province, Drâa-Tafilalet, Morocco

Group of prismatic arfvedsonite crystals, with parallel growth, striated faces and polycrystalline terminations, shiny and dark green, almost black in color. They are partially covered with feldspar. A curious specimen...

Size: 4.5 x 3.6 x 3.3 cm.
Main crystal: 2 cm.
Found in ±2011.
More info
65 €
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