Rich specimen of parasymplesite from this classic Mexican mine. Several divergent aggregates of prismatic to tabular parasymplesite crystals, with a light green color on the surface and a very dark green, almost black, color inside. They are disposed on a goethite matrix with cavities layered by small honey-colored arseniosiderite crystals and adamite. This specimen belongs to the Joan Astor collection (Barcelona), with a handwritten label and another typewritten.

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