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 three molecules of water of crystallisation. Research Boleite
Mendipite is a rare white, grey or colourless mineral with a high density but low relative hardness of 2.5 Mendipite is a halide of lead formed around volcanic vents and in hydrothermal veins. It is most commonly found in association with calcite, cerussite, malachite, manganite, pyrolusite and pyromorphite. Most deposits take the form of columnar or fibrous masses, often with radiating external shapes. Research Mendipite
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Matt and Leela Probert
Abbreviations
Research Halide
