Boleite
Boleite is a rare halide mineral known for its deep blue color and distinctive cubic crystal shape. It is highly valued by collectors due to its rarity and unique appearance rather than for use in jewelry.
About
Boleite
Boleite is a rare and complex halide mineral composed of lead, silver, copper, and halogens, with the chemical formula KPb₂₆Ag₉Cu₂₄Cl₆₂(OH)₄₈. It belongs to the halide mineral group and crystallizes in the cubic crystal system. Boleite is especially famous for its perfect cube-shaped crystals, which are often well-formed and highly attractive. The mineral is best known for its deep indigo to royal blue color, which is caused by the presence of copper in its structure. It typically appears opaque, although some thin crystal edges may show slight translucency. Boleite has a vitreous to sub-adamantine luster, giving it a bright and reflective surface that enhances its visual appeal.
Physical & Chemical Properties
| Name | Boleite |
|---|---|
| Scientific Name | Boleite |
| Mineral Group | Halide |
| Hardness (Mohs) | 3 – 3.5 |
| Color | Deep blue, indigo blue |
| Origin | Mexico (primary source), USA, Chile |
| Chemical Formula | KPb₂₆Ag₉Cu₂₄Cl₆₂(OH)₄₈ |
Quick Facts
| Crystal System | Cubic (Isometric) |
|---|---|
| Specific Gravity | 5.0 – 5.3 |
| Birthstone | NA |
| Refractive Index | 2.0 – 2.1 |
| Optical Character | Isotropic |
| Dispersion | Low |
| Major Sources | Mexico (primary source), USA, Chile |
| Treatments | Boleite is usually untreated and collected in its natural form |
| Price Range | $50 – $200 |
| Care Instructions | Handle with extreme care Avoid water and chemicals Store in a dry, protected environment Clean with a soft dry cloth only |