Boleite was 1st uncovered in Boleo, Mexico in 1891, in the area in the Baja peninsula that is now well-known for rare minerals. Boleite is these types of an unconventional and complicated mineral the definition of its chemical composition and crystal structure have been through various revisions considering that its very first discovery.
The very first specimens of boleite were found out by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral in the same locale, with the same structure and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are lots of attributes of boleite which make it of distinct interest to collectors. For another thing, it has an unconventional chemical composition, staying a hydrated lead copper silver chloride hydroxide. It incorporates major quantities of such metals, with about 49% lead, fourteen% copper and nine% silver. Secondly, it's got an interesting crystal structure, due to the fact boleite is Δαχτυλιδια ΜοντεÏνα usually pseudocubically twinned. That is, Each individual cube-like crystal of boleite is definitely composed of a few rectangular box-like crystals oriented at proper angles to one another. Boleite also has an incredibly appealing indigo shade and a few pretty unusual clear crystals have already been Slash as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for example fluorite, boleite is quite smooth, having a Mohs hardness ranking of only three to 3.five. It's got a vitreous to pearly luster. It can ΧειÏοποίητα Δαχτυλίδια be an unusually dense mineral, with a particular gravity of five.05. Only a few minerals, for example hematite and cassiterite, have a greater density. Boleite's refractive index is likewise really superior ΑσημÎνια Δαχτυλίδια at 2.03-two.05; higher than sapphire, sphene and demantoid garnet.
Besides cumengite, there are a ΧÏυσά Δαχτυλίδια number of other minerals linked to boleite, including pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Together with Δαχτυλίδια Γυναικεία the deposit in Baja, Mexico, boleite has been present in Damaged Hill in New South Wales, Australia; in the Mammoth District of Arizona in The us; and from the Mendip Hills of Somerset, England.
