Rosell Minerales

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RM3048   Nepheline and schorlomite

Jebel Bou-Agrao, Amersid, Aït Oufella Caïdat, Midelt Cercle, Drâa-Tafilalet, Morocco

Prismatic crystals of nepheline, associated with a matrix with black schorlomite (garnet group). Although nepheline is a fairly common rock-forming mineral in silica-poor igneous rocks, such as nephelitic syenites, well-formed crystals of this species are rare.

Size: 6.4 x 4.2 x 3.6 cm.
Main crystal: 14 mm.
Found in ±2009.

Col. Peter Seroka (#4875).