Dims: 1.67x1.41x1.32" (4.25x3.57x3.35cm)
Wt: 2.02oz (57.4g)
Bou Azzer, Morocco
Every surface of this speicmen shows at least some crystals of erythrite, as it apparently filled all of the cavities. The best crystals are confined to two opposite sides, where larger cavities were exposed that allowed good crystals to form. The best crystals have an excellent maroon color, are transparent, and have a vitreous luster. Many of the larger crystals, however, appear dulled by a thin coating of some dark iron-black mineral which looks like goethite under a loupe. The erythrite crystals are organized in clusters of flat blades with a parallelogram outline.