Boleite on Gypsum matrix

Boleite on Gypsum matrix- Amelia Mine, Boleo, Baja California Sur, Mexico. Specimen is 7.5 cm across, Boleite cube is 5mm across. Boleite is a complex halide mineral with formula: KPb26Ag9Cu24(OH)48Cl62. It was first described in 1891 as an oxychloride mineral. It is...

Crocoite on white Gibbsite-

Crocoite on white Gibbsite- Adelaide Mine, Red River Lower Pocket, Tasmania, Australia. 7.5 cm tall. An exceptional piece donated to the foundation by a good friend from Tasmania, Shane Stanfield.