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 unconventional and sophisticated mineral the definition of its chemical composition and crystal construction have been through quite a few revisions due to the fact its 1st discovery.
The primary specimens of boleite had been discovered by Eduoard Cumenge, a French mining engineer. A further exceptional halide mineral from your exact locale, with the same structure and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are lots of attributes of boleite which make it of distinct interest to collectors. For another thing, it has an unusual chemical composition, staying a hydrated lead copper silver chloride hydroxide. It incorporates major quantities of such metals, with about 49% guide, fourteen% copper and ΧÏυσά nine% 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 ΧειÏοποίητα Δαχτυλίδια of boleite is in fact made up of three rectangular box-like crystals oriented at suitable angles to each other. Boleite also has an exceedingly ΧειÏοποίητα Δαχτυλίδια desirable indigo color and many very exceptional transparent crystals are Reduce as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, which include fluorite, boleite is fairly tender, using a Mohs hardness ranking of only 3 to three.five. 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, for example 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 associated with boleite, like pseudoboleite, chloroxiphite, paralaurionite, matlockite, Δαχτυλιδια skroutz chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
In combination with the deposit in Baja, Mexico, boleite has long been found in Damaged Hill in New South Wales, Australia; in the Mammoth District of Arizona Δαχτυλιδια Φθηνα in The us; and from the Mendip Hills of Somerset, England.
