Boleite
Mineral KPb26Ag9Cu24Cl62(OH)48
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
About it
Deep indigo-blue cubes, sometimes with cumengeite grown on each face. Nearly all specimens come from Santa Rosalía (El Boleo), Baja California Sur, Mexico, which gave it its name.
- Type
- Mineral
- Group
- Halide
- Formula
- KPb26Ag9Cu24Cl62(OH)48
- Hardness (Mohs)
- 3–3.5
- Specific gravity
- 5–5.1
- Streak
- greenish blue
- Lustre
- vitreous (glassy), pearly
- Crystal system
- Isometric (cubic)
- Colours
- indigo blue, Prussian blue
- Transparency
- translucent
- Cleavage and fracture
- perfect cubic
Typical values: real specimens vary. For more, see mindat.org.