Calcite from Aït Ahmane, Drâa-Tafilalet Region, Morocco

$600.00

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An excellent example for the species, many sharp lustrous metallic silver crystals of gersdorffite measuring to 1.0 cm in size or across one side of a massive calcite matrix. In good condition. The specimen comes with a previous label from the collection of Jan Erik Larsen. This dates to 2011. Ait Ahmane, situated in the eastern sector of the Bou Azzer-El Graara inlier within the Anti-Atlas belt of Morocco, is a renowned mining locality with operations dating back to the mid-20th century. Geologically, the area is characterized by a Neoproterozoic ophiolitic sequence where serpentinized ultramafic rocks and quartz diorites are heavily faulted and hydrothermally altered. Mineralogically, the district is famous for its complex vein systems that yield cobalt arsenides, native silver, and nickel minerals, alongside striking associated specimens of cobaltian calcite and various secondary phases that attract mineral collectors globally.