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RM1331   Arfvedsonite with actinolite and feldspar

Group of prismatic arfvedsonite crystals, showing parallel growth. With well defined striated faces and polycrystalline terminal faces. Dark green color, near black, in a feldspar crystal matrix with small needles of atinolite. Nice miniature.

Size: 6.5 x 4.5 x 3.8 cm.
Main crystal: 23 x 18 mm.
Found in 2011.
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