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RM3373   Arfvedsonite and feldspar

Group of prismatic arfvedsonite crystals, with parallel growth, striated faces and polycrystalline terminations, very shiny and dark green, almost black in color. Accompanied by minor feldspar as a matrix.

Size: 4.3 x 2.5 x 2.2 cm.
Main crystal: 3.7 cm.
Found in ±2011.