Calcite coated w/ Chalcanthite w/ rare Pyrite cubes (Cynthia Payne Coll.)

Item Description

Blue-green chalcanthite coats the jackstraw, flattened, colorless, calcite rhombs on this very rich, showy and rare specimen from this obscure French locale. A MAJOR surprice are the sharp cubic pyrite crystals clustered on the back and lower front! Very rare combination material from the Cynthia Payne Collection. Pyrite is not listed by MINDAT for the locale. Value to the species or locality collector?