Penfieldite, Cotunnite, Pseudoboleite
Margarita Mine, Caracoles, Caracoles mining district, Sierra Gorda, Antofagasta Province, Antofagasta, Chile
In the center of the photo a penfieldite crystal, with a very acute bipyramid, and, around it, more or less spherical, colorless "drops" with vivid luster of cotunnite, and minute blue crystals of pseudoboleite.
Ex Adriana and Renato Pagano collection and now Gianfranco Ciccolini collection, author of the photo. Nikon D750, two bellows, Luminar ...