Boleite was to start with uncovered in Boleo, Mexico in 1891, in the region from the Baja peninsula that has become famous for exceptional minerals. Boleite is these kinds of an abnormal and complex mineral which the definition of its chemical composition and crystal construction have undergone several revisions considering the fact that its initially discovery.
The primary specimens of boleite had been discovered by Eduoard Cumenge, a French mining engineer. A further exceptional halide mineral from your same locale, with the same structure and a rather distinct 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's got an abnormal chemical composition, becoming a hydrated guide copper silver chloride hydroxide. It includes sizeable quantities of these metals, with about 49% lead, fourteen% copper and 9% silver. Secondly, it's got an interesting crystal composition, due to the fact boleite is always pseudocubically twinned. That may be, Every single cube-like crystal of boleite is in fact composed of 3 rectangular box-like crystals oriented at right angles to one another. Boleite also has a really beautiful indigo color plus some really scarce transparent crystals are actually Lower as gemstones.
Boleite Δαχτυλιδια bulgari in MatrixBoleite in Matrix
Like other halide minerals, such as fluorite, boleite is kind of soft, by using a Mohs hardness rating of only 3 to Δαχτυλιδια ΜονοπετÏα three.5. It's a vitreous to pearly luster. It is actually an unusually dense ΛευκόχÏυσα mineral, with a particular gravity of five.05. Only a few minerals, for instance hematite and cassiterite, have a higher Δαχτυλίδια density. Boleite's refractive index can 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, which includes pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
In combination with the deposit in Baja, Mexico, boleite is present in Damaged Hill in New South Wales, Australia; within the Mammoth District of Arizona in The usa; and during the Mendip Hills of Δαχτυλιδια ΜονοπετÏα Somerset, England.
