Boleite was initially learned in Boleo, Mexico in 1891, in the area in the Baja peninsula that is now famous for scarce minerals. Boleite is these types of an abnormal and complicated mineral that the definition of its chemical composition and crystal composition have gone through numerous revisions given that its first discovery.
The first specimens of boleite were being uncovered by Eduoard Cumenge, a French mining engineer. Yet another uncommon halide mineral within the very same area, with a similar composition and a slightly different chemical composition, was named cumengite in honor of Cumenge.
There are several capabilities of boleite that make it of particular fascination to collectors. For one thing, it's got an abnormal chemical composition, being a hydrated guide copper silver chloride hydroxide. It includes sizeable quantities of these metals, with about 49% lead, fourteen% copper and nine% silver. Secondly, it's got an interesting crystal composition, considering that boleite is always pseudocubically twinned. That is definitely, Each and every dice-like crystal of boleite is really made up of 3 rectangular box-like crystals oriented at ideal angles to each other. Λευκόχρυσα Boleite also has a very eye-catching indigo color and many extremely scarce transparent crystals are actually Lower as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, like fluorite, boleite is very Λευκόχρυσα tender, having a Mohs hardness rating of only three to three.5. It's got a vitreous to pearly luster. It's an unusually dense mineral, with a Χρυσά Δαχτυλίδια certain gravity of 5.05. Just a few minerals, such as hematite and cassiterite, have a better density. Boleite's refractive Δαχτυλίδια Γυναικεία index is also quite high at 2.03-two.05; greater than sapphire, sphene and demantoid garnet.
Besides cumengite, there are a number of other minerals linked to boleite, including pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Together with the deposit in Baja, Mexico, Χρυσά & Λευκόχρυσα Δαχτυλίδια boleite has long been found in Broken Hill in New South Wales, Australia; from the Mammoth District of Arizona in the United States; and while in the Mendip Hills of Somerset, England.