Boleite was 1st uncovered in Boleo, Mexico in 1891, within a region from 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 have been 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, ΧÏυσά fourteen% copper and 9% silver. Secondly, it's a fascinating crystal composition, due to the fact boleite is usually pseudocubically twinned. That is, Just about every ΧειÏοποίητα Δαχτυλίδια cube-like crystal of boleite is in fact composed of 3 rectangular box-like crystals oriented at correct angles to Δαχτυλιδια swarovski one another. Boleite also has a really beautiful indigo colour plus some quite rare transparent crystals have been Minimize as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, such as fluorite, boleite is kind of gentle, that has a Mohs hardness rating of only three to three.5. It's a ΧÏυσά & ΛευκόχÏυσα Δαχτυλίδια vitreous to pearly luster. It is an unusually dense mineral, with a certain gravity of five.05. Only a few minerals, which include hematite and cassiterite, have a greater density. Boleite's refractive index is usually really superior at 2.03-2.05; bigger than sapphire, sphene and demantoid garnet.
As well as cumengite, There are a selection of other minerals related to boleite, which include pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Along with the deposit in Baja, ΑσημÎνια Δαχτυλίδια Mexico, boleite has become located in Broken Hill in New South Wales, Australia; while in the Mammoth District of Arizona in America; and within the Mendip Hills of Somerset, England.
