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RM3550   Aegirine, arfvedsonite, orthoclase and quartz
NaFe3+Si2O6

A very good-sized specimen with an aggregate of brilliant aegirine crystals of an intense green, almost black colour, with well-defined faces and edges. It is accompanied by green fibrous crystals of arfvedsonite. They are disposed in a matrix of orthoclase crystals with quartz.

Size: 7.8 x 7.4 x 6.2 cm.
Main crystal: 36 mm.
Col. Jaime Murria (Barcelona).
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