Boleite was to start with found out in Boleo, Mexico in 1891, in a very area on the Baja peninsula that is becoming recognized for uncommon minerals. Boleite is such an unconventional and complicated mineral the definition of its chemical composition and crystal structure have been through many revisions considering that its initial discovery.
The very first specimens of boleite were being learned by Eduoard Cumenge, a French mining engineer. One more uncommon halide mineral within the similar area, with a similar composition and a slightly various chemical composition, was named cumengite in honor of Cumenge.
There are several options of boleite that make it of specific 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 49% lead, fourteen% copper and 9% silver. Next, it has an interesting Δαχτυλιδια swarovski crystal structure, considering the fact that boleite is usually pseudocubically twinned. That is, Each individual cube-like crystal of boleite is definitely composed of a few rectangular Δαχτυλιδια swarovski box-like crystals oriented at proper angles to one another. Boleite also has Δαχτυλιδια bulgari an extremely attractive indigo shade and a few incredibly uncommon clear crystals have ΧÏυσά already been Slash as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, including 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 Δαχτυλιδια bulgari two.03-two.05; greater than sapphire, sphene and demantoid garnet.
In combination with 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.
