Boleite was initially identified in Boleo, Mexico in 1891, within a region of the Baja peninsula that happens to be famous for exceptional minerals. Boleite is these kinds of an abnormal and complex mineral which the definition of its chemical composition and crystal framework have undergone several revisions since its to start with discovery.
The 1st specimens of boleite ended up identified by Eduoard Cumenge, a French mining engineer. An additional rare halide mineral with the very same place, with an analogous framework and a slightly different chemical composition, was named cumengite in honor of Cumenge.
There are plenty of capabilities of boleite that make it of particular fascination to collectors. For one thing, it's got an uncommon chemical composition, being a hydrated direct copper silver chloride hydroxide. It consists of significant portions of these metals, with about 49% lead, fourteen% copper and 9% silver. Next, it has an interesting crystal construction, considering the Δαχτυλίδια fact that 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 each other. Boleite Δαχτυλιδια Φθηνα also has an incredibly appealing indigo coloration and a few pretty unusual clear crystals have already been cut as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for example fluorite, boleite is quite comfortable, with a Mohs hardness score of only three to 3.five. It has a vitreous to pearly luster. It truly is an unusually dense mineral, with a specific gravity of 5.05. Only some minerals, like hematite 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.
In combination with cumengite, there are a number of Δαχτυλιδια ΜονοπετÏα other minerals connected to boleite, such as pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Besides the deposit in Baja, Mexico, boleite has been present in Damaged Hill in New South Δαχτυλιδια Φθηνα Wales, Australia; in the Mammoth District of Arizona in The us; and ΧÏυσά from the Mendip Hills of Somerset, England.
