Classic rare deep blue Pseudoboleite epitaxial over growth on Cubic Boleite crystals from the famous Amelia Mine location in Baja California, Mexico. The specimen has a number of crystals of Pseudoboleite/Boleite measuring to 6mm, with rare characteristic Epitaxial Cumengeite on Boleite measuring to 1-2mm. Also on the specimen are partly etched rare rod-like crystals of Phosgenite. All minerals are on and in a white Anglesite/Cerussite and reddish Fe-oxide matrix. A terrific mineral assemblage of rare Chloride minerals.