South America
2875 Matioliite, Gentil claim, Mendes Pimentel, Doce valley, Minas Gerais, Brazil
Type Locality. Tiny pale blue patch.
2848 Gold, Chrysocolla, Manto Tres Gracias Mine, Diego de Almagro, El Salado, Chanaral Province, Atacama Region, Chile
Two pieces. Bright gold on deep blue chrysocolla.
2774 Caledonite, Quartz, Dos Adriana Mine, Zapallar district, Copiap¢ Province, Atacama Region, Chile
Typical blue crystals with cerussite(?) on quartz.
2775 Perroudite, Capitana Mine, Copiapo Province, Atacama Region, Chile
Red acicular crystals.
2754 Dioptase, Fluorapatite, Miraflores Mine, Tierra Amarilla, Copiapo Province, Atacama Region, Chile
Green sprays of dioptase with white apatite. This mine not mentioned in this district in Mindat (Jan 2015).
6041 Mimetite (Bellite), Diaboleite, Schwartzembergite, Gypsum, La Poderosa Mine, Caracoles, Antofagasta Region, Chile
Orange prismatic bellite, blue diaboleite, yellow schwartzembergite
6031 Studtite, Phosphuranylite, Saleeite, Almerindo mine, Linapolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Brazil
Pale yellow fibres of studtite on matrix with bright yellow crusts made up of a mixture of phosphuranylite and saleeite. Studtite is a very unusual uranium species because it is the only known mineral that contains the peroxide radical (you only encounter this radical in the form of hydrogen peroxide...
6027 Gratonite, Excelsior Mine, Cerro de Pasco, Peru
Vintage micromount: A superb 4x3mm display face specimen of Gratonite from its type locality, Cerro do Pasco, Peru. It was once a duplicate in the collection (later bequeathed the Smithsonian) of the late Neal Yedlin. In 1975, the late Micromount Hall of Fame member Marcelle Weber acquired it as noted...