Boleite was initial found out in Boleo, Mexico in 1891, in a very region from the Baja peninsula that happens to be famous for exceptional minerals. Boleite is these kinds of an uncommon and complex mineral which the definition of its chemical composition and crystal construction have undergone quite a few 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 fascination to collectors. For something, it's got an abnormal chemical composition, being 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, considering that boleite is always ΧÏυσά pseudocubically twinned. That is definitely, Each and every dice-like crystal of boleite is in fact made up of 3 rectangular box-like crystals oriented at ideal angles to each other. Boleite also has a very eye-catching indigo color and many extremely exceptional transparent crystals are Reduce as gemstones.
Boleite in MatrixBoleite in ΧÏυσά Matrix
Like other halide minerals, which include fluorite, boleite is kind of gentle, that has a Mohs hardness rating of only 3 to three.5. It's a vitreous to pearly luster. It is an unusually dense mineral, with a ΧειÏοποίητα Δαχτυλίδια certain gravity of five.05. Only a few minerals, for instance hematite and cassiterite, have a higher 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 linked to boleite, which includes pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
In ΧειÏοποίητα Δαχτυλίδια addition to the deposit in Baja, Mexico, boleite is located in Broken Hill ΛευκόχÏυσα in New South Wales, Australia; inside the Mammoth District of Arizona in America; and within the Mendip Hills of Somerset, England.
