Boleite was initially uncovered in Boleo, Mexico in 1891, in the area in the Baja peninsula that is now well known for scarce minerals. Boleite is these types of an strange and complicated mineral that the definition of its chemical composition and crystal framework have gone through a number of revisions because its first discovery.
The main specimens of boleite have been identified by Eduoard Cumenge, a French mining engineer. Another scarce halide mineral with 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 significant portions of these metals, with about forty nine% lead, fourteen% copper and 9% silver. Next, it has an interesting crystal construction, considering the fact that boleite is usually pseudocubically twinned. That's, ΧÏυσά Each individual cube-like crystal of boleite is actually made up of a few rectangular box-like crystals oriented at appropriate angles to each other. Boleite also has an incredibly appealing indigo coloration and a few pretty unusual clear Δαχτυλιδια Φθηνα crystals have already been cut as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide Δαχτυλιδια skroutz minerals, for example fluorite, boleite is very smooth, having a Mohs hardness score of only three to 3.five. It has a vitreous to pearly luster. ΧÏυσά Δαχτυλίδια It truly is an unusually dense mineral, with a specific gravity of 5.05. Only some minerals, like hematite Δαχτυλιδια swarovski and cassiterite, have an increased density. Boleite's refractive index can also be incredibly higher at two.03-two.05; larger than sapphire, sphene and demantoid garnet.
Besides cumengite, there are a number of other minerals connected 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; during the Mammoth District of Arizona in the United States; and while in the Mendip Hills of Somerset, England.
