Boleite was to start with found out in Boleo, Mexico in 1891, inside of a location with the Baja peninsula that is becoming recognized for uncommon minerals. Boleite is such an unusual and sophisticated mineral the definition of its chemical composition and crystal structure have been through various revisions due to the fact its 1st discovery.
The initial specimens of boleite had been discovered by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral from your exact same locale, with the same construction and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are lots of functions of boleite that make it of unique curiosity to collectors. For another thing, it's an uncommon chemical composition, getting a hydrated direct copper silver chloride hydroxide. It consists of sizeable portions of these metals, with about 49% lead, fourteen% copper and 9% silver. Secondly, it's got an interesting crystal structure, considering the fact that boleite is usually pseudocubically twinned. That's, Each individual cube-like crystal of boleite is ΑσημÎνια Δαχτυλίδια actually composed of a few rectangular box-like crystals oriented at proper angles to one another. Boleite also has an incredibly appealing indigo coloration and a few pretty unusual clear crystals have already been cut as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for example fluorite, boleite is quite comfortable, with a Mohs hardness score of only 3 to 3.five. It has a vitreous to pearly luster. It can be an unusually dense mineral, with Δαχτυλιδια bulgari a specific gravity of five.05. Only some minerals, including hematite and cassiterite, have the next density. Boleite's refractive index is additionally pretty large at two.03-2.05; Δαχτυλιδια ΜοντεÏνα better than sapphire, sphene and demantoid garnet.
Along with cumengite, There are a variety Δαχτυλιδια bulgari of other minerals associated with boleite, like pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, Δαχτυλιδια skroutz bideauxite, atacamite, mendipite and diaboleite.
In addition to the deposit in Baja, Mexico, boleite is located in Damaged Hill in New South Wales, Australia; inside the Mammoth District of Arizona in The usa; and in the Mendip Hills of Somerset, England.
