Aragonite, Chalcophyllite
Thumbnail, 1.6 x 1.6 x 0.9 cm
Corocoro, Pacajes Province, La Paz Department, Bolivia

This locality is known for its unique pseudomorphs of Copper after Aragonite, but this "floater" specimen features a non-pseudomorphed pseudo-hexagonal crystal of beige Aragonite which is associated with rarely seen bright blue Chalcophyllite crystals.