Like snow on mountains, Fluorite crystals with sharp phantoms are selectively coated with Calcite rhombs. Ex. Shields Flynn collection, a choice display piece from the little known Dongpo Mine. In excellent condition overall, the only damage is unseen at the bottom outer edges where this was attached, the Fluorites and Calcite are pristine. Some cubes show complex corner modifications that are distinctive for this mine. Not the usual Chinese Fluorite!