Boleite was to start with uncovered in Boleo, Mexico in 1891, within a region of the Baja peninsula that happens to be recognized for uncommon minerals. Boleite is this kind of an unusual and sophisticated mineral the definition of its chemical composition and crystal structure have undergone various revisions due to the fact its 1st discovery.
The primary specimens of boleite had been discovered by Eduoard Cumenge, a French mining engineer. A further unusual halide mineral from your exact same locale, with the same structure and a rather distinct chemical composition, was named cumengite in honor of Cumenge.
There are numerous attributes of boleite which make it of certain interest to collectors. For something, it has an unconventional chemical composition, currently being a hydrated direct copper silver chloride hydroxide. It includes significant portions of these metals, with about forty nine% lead, fourteen% copper and 9% silver. Next, it has a captivating crystal construction, since boleite is usually pseudocubically twinned. That's, Each individual cube-like crystal of boleite is actually composed of a few rectangular box-like crystals oriented at appropriate angles to one another. Boleite also has an Δαχτυλιδια Φθηνα incredibly appealing indigo coloration and a few pretty unusual clear crystals are already cut as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for instance Δαχτυλιδια ΜονοπετÏα fluorite, boleite is very smooth, that has a Mohs hardness rating of only three to three.5. It's a vitreous Δαχτυλιδια skroutz to pearly luster. It's an unusually dense mineral, with a certain gravity ΧÏυσά Δαχτυλίδια of 5.05. Just a few minerals, which include hematite and cassiterite, have a greater density. Boleite's refractive index is usually really superior at 2.03-two.05; higher than sapphire, sphene and demantoid garnet.
Together with cumengite, There are a selection of other minerals connected with boleite, which include pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Along with the deposit in Baja, Mexico, boleite has actually been located in Broken Hill ΧÏυσά in New South Wales, Australia; while in the Mammoth District of Arizona in the United States; and inside the Mendip Hills of Somerset, England.
