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RM3370   Arfvedsonite and feldspar

Group of prismatic arfvedsonite crystals, with parallel growth, striated faces and polycrystalline terminations, shiny and dark green, almost black in color. In feldspar matrix. Nowadays it is difficult to get these samples.

Size: 4.5 x 3.5 x 2.6 cm.
Main crystal: 10 mm.
Found in ±2011.
55 €