Boleite was initial found in Boleo, Mexico in 1891, inside a location of your Baja peninsula that has grown to be renowned for unusual minerals. Boleite is this sort of an uncommon and complex mineral which the definition of its chemical composition and crystal construction have undergone several revisions considering the fact that its to start with discovery.
The 1st specimens of boleite have been found by Eduoard Cumenge, a French mining engineer. Another scarce halide mineral through the identical place, with an analogous framework and a slightly distinctive chemical composition, was named cumengite in honor of Cumenge.
There are plenty of characteristics of boleite that make it of individual fascination to collectors. For one thing, it's got an uncommon chemical composition, remaining a hydrated direct copper silver chloride hydroxide. It consists of sizeable quantities of such metals, with about 49% lead, fourteen% copper and 9% silver. Next, it has an interesting crystal construction, considering the fact that boleite is usually pseudocubically twinned. That is, Just ΧÏυσά about every cube-like crystal of boleite is definitely composed of 3 rectangular box-like crystals oriented at correct angles to one another. Boleite also has a really interesting indigo colour plus some quite rare clear crystals have been Slice as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, like fluorite, boleite is sort of delicate, that has a Mohs hardness rating of only three to 3.5. It's got a vitreous to pearly luster. It's an unusually dense Δαχτυλιδια bulgari mineral, with a selected gravity of 5.05. Just a few minerals, which include hematite and cassiterite, have a better density. Boleite's refractive index is usually Δαχτυλιδια Γυναικεια 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, together with Δαχτυλιδια ΜονοπετÏα pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Along with the deposit ΧÏυσά in Baja, Mexico, boleite has actually been found in Broken Hill in New South Wales, Australia; from the Mammoth District of Arizona in the United States; and inside the Mendip Hills of Somerset, England.
