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.

Size: 6.5 x 5.4 x 3.2 cm.
Main crystal: 3 mm.
Found in ±1977.

Col. J. Astor, Barcelona.
Classic locality