Boleite was 1st identified in Boleo, Mexico in 1891, within a region of the Baja peninsula that happens to be renowned for unusual minerals. Boleite is these kinds of an uncommon and complex mineral the definition of its chemical composition and crystal construction have undergone quite a few revisions considering the fact that its initially discovery.
The primary specimens of boleite have been found by Eduoard Cumenge, a French mining engineer. A further exceptional halide mineral from your exact same location, with the same structure and a rather distinct chemical composition, was named cumengite in honor of Cumenge.
There are numerous features of boleite which make it of certain desire to collectors. For something, it has an unconventional chemical composition, currently being a hydrated lead copper silver chloride hydroxide. It has important quantities of those metals, with about forty Δαχτυλιδια swarovski nine% lead, fourteen% copper and nine% silver. Secondly, it's got an interesting crystal Δαχτυλίδια structure, considering the fact that boleite is usually pseudocubically twinned. That's, 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 Δαχτυλιδια ΜονοπετÏα incredibly appealing indigo coloration and a few pretty unusual clear crystals are already Slice as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, including fluorite, boleite is quite delicate, which has a Mohs hardness score of only three to 3.five. It's got a vitreous to pearly luster. It really is an unusually dense mineral, with a selected gravity of 5.05. Just a few minerals, such as hematite and cassiterite, have a better density. Boleite's refractive index is also quite high at 2.03-two.05; greater than sapphire, sphene and demantoid ΧÏυσά & ΛευκόχÏυσα Δαχτυλίδια 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, boleite has been found in Broken Hill in New South Wales, Australia; from the Mammoth ΧειÏοποίητα Δαχτυλίδια District of Arizona in the United States; and while in the Mendip Hills of Somerset, England.
