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RM2720   Hambergite

Anjanabonoina pegmatites, Ambohimanambola, Betafo, Vakinankaratra, Madagascar

Hambergite is a rare mineral species, a beryllium hydroxyborate, which occurs in the tourmaline pegmatites of Anjanabonoina. This sample shows us a group of crystals of exceptional size and quality, flattened and with well-defined terminations. Transparent to translucent, with brilliance. This mineral is usually found as single crystals, rarely on matrix, and less with this size. A museum piece.

Size: 7.2 x 5.2 x 4 cm.
Main crystal: 3.7 cm.