Boleite was initially identified in Boleo, Mexico in 1891, within a region from the Baja peninsula that happens to be famous for exceptional minerals. Boleite is these an abnormal and complex mineral that the definition of its chemical composition and crystal framework have gone through several revisions since its to start with discovery.
The 1st specimens of boleite have been identified by Eduoard Cumenge, a French mining engineer. An additional 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 capabilities of boleite that make it of particular fascination to collectors. For one thing, it's got an abnormal chemical composition, being a hydrated guide 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, considering the fact that boleite is usually pseudocubically ΧÏυσά 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 ΛευκόχÏυσα also has an incredibly attractive indigo shade and a few incredibly uncommon clear crystals have already been Slash as gemstones.
Boleite in MatrixBoleite in Matrix
Like other ΧÏυσά Δαχτυλίδια halide minerals, for example fluorite, boleite is quite comfortable, with a Mohs Δαχτυλίδια hardness score of only three to 3.five. It has a vitreous to pearly luster. It is an unusually dense mineral, with a certain gravity of 5.05. Just a few minerals, which include 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 garnet.
In combination with cumengite, there are a number Δαχτυλίδια Γυναικεία of other minerals connected to boleite, such as pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Besides the deposit in Baja, Mexico, boleite continues to be present in Damaged Hill in New South Wales, Australia; in the Mammoth District of Arizona in The us; and during the Mendip Hills of Somerset, England.
