Boleite

Boleite is a complex halide mineral with formula: KPb26Ag9Cu24(OH)48Cl62. It was first described in 1891 as an oxychloride mineral. It is an isometric mineral which forms in deep blue cubes. There are numerous minerals related to boleite, such as pseudoboleite, cumengite, and diaboleite, and these all have the same complex crystal structure (Marte...
Found on http://en.wikipedia.org/wiki/Boleite

Boleite

Boleite is a rare and complex secondary mineral of the halide group, reddish or purple in colour and usually formed in cube-shaped crystals. Boleite was first discovered in Boleo, Mexico and named after the location. It was confirmed as a distinct mineral in 1891. Boleite contains atoms of lead, silver, copper, chlorine and hydroxyl molecules and t...
Found on http://www.probertencyclopaedia.com/browse/HB.HTM
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