Boleite was to start with identified in Boleo, Mexico in 1891, inside a region of the Baja peninsula that happens to be renowned for unusual minerals. Boleite is this sort of an uncommon and sophisticated mineral the definition of its chemical composition and crystal construction have been through various revisions due to the fact its 1st discovery.
The initial specimens of boleite were found out by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral in the exact site, with an identical structure and a rather distinct chemical composition, was named cumengite in honor of Cumenge.
There are many options of boleite which make it of specific fascination to collectors. For one thing, 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 structure, due to the fact boleite is always pseudocubically twinned. That may be, Every single cube-like crystal of boleite is in Δαχτυλιδια ΜοντεÏνα fact composed of 3 rectangular box-like crystals oriented at right angles to one another. Boleite also has a really beautiful indigo colour plus some really 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 3 to three.5. It's a vitreous to pearly luster. It is an unusually Δαχτυλίδια Γυναικεία dense mineral, with a 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 Δαχτυλίδια Γυναικεία sapphire, sphene and demantoid garnet.
Along with Δαχτυλιδια Γυναικεια cumengite, There are a variety of other minerals associated with boleite, like Δαχτυλιδια skroutz 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 in the Mendip Hills of Somerset, England.
