Boleite was initial discovered in Boleo, Mexico in 1891, in a location of your Baja peninsula that has grown to be popular for unusual minerals. Boleite is these kinds of an uncommon 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 found by Eduoard Cumenge, a French mining engineer. Another scarce halide mineral through the identical location, with an analogous construction and a slightly unique chemical composition, was named cumengite in honor of Cumenge.
There are various characteristics of boleite that make it of unique curiosity to collectors. For one thing, it's an uncommon chemical composition, remaining a hydrated direct copper silver chloride hydroxide. It consists of sizeable quantities of such 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 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 also has an incredibly appealing indigo coloration and a few very unusual transparent crystals are already Reduce as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for instance fluorite, boleite is very tender, using a Mohs hardness Δαχτυλιδια bulgari ranking of only 3 to three.five. It's a vitreous to pearly luster. It is actually an unusually dense mineral, with a particular gravity of five.05. Δαχτυλιδια swarovski Only a few minerals, for example hematite and cassiterite, have a higher density. Boleite's refractive index can be pretty substantial at two.03-2.05; better than sapphire, Δαχτυλιδια bulgari sphene and demantoid garnet.
Along with cumengite, There are a variety of other ΛευκόχÏυσα minerals associated with boleite, like pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
In addition to the deposit in Baja, Mexico, boleite is located in Damaged Hill in New South Wales, Australia; inside the Mammoth District of Arizona in The usa; and in the Mendip Hills of Somerset, ΧÏυσά England.
