Boleite was 1st uncovered in Boleo, Mexico in 1891, in the area in the Baja peninsula that is now well-known for rare minerals. Boleite is these types of an unconventional and complicated mineral that the definition of its chemical composition and crystal composition have been through numerous revisions given that its first discovery.
The first specimens of boleite had been identified by Eduoard Cumenge, a French mining engineer. Yet another rare halide mineral within the similar spot, with a similar composition and a rather various chemical composition, was named cumengite in honor of Cumenge.
There are many features of boleite which make it of specific desire to collectors. For something, it has an strange chemical composition, getting a hydrated lead copper silver chloride hydroxide. It has important quantities of such metals, with about 49% guide, 14% copper and nine% silver. Secondly, it's got an interesting crystal structure, given that boleite is usually pseudocubically twinned. That's, each dice-like crystal of boleite is actually made up ΧÏυσά of three rectangular box-like crystals oriented at suitable angles to each other. Boleite also has an exceptionally desirable indigo coloration and several very exceptional transparent crystals are already Reduce as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, which include fluorite, boleite is fairly tender, by using a Mohs hardness ranking of only 3 to three.5. It's a vitreous to pearly luster. It is actually an unusually dense mineral, with a particular gravity of five.05. Only a few minerals, including hematite and cassiterite, have a higher density. Boleite's refractive index can Δαχτυλιδια Γυναικεια be very substantial at two.03-2.05; better than sapphire, sphene and demantoid garnet.
Along with cumengite, There are a variety of other minerals associated with boleite, like pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, Δαχτυλίδια Γυναικεία atacamite, mendipite and diaboleite.
In addition to the deposit in Baja, Mexico, boleite has become located in Broken Hill in New South Wales, Australia; inside Δαχτυλιδια swarovski the Mammoth District of Arizona in America; and within the Mendip Hills Δαχτυλιδια ΜονοπετÏα of Somerset, England.
