Boleite was to start with discovered in Boleo, Mexico in 1891, within a region of the Baja peninsula that happens to be famous for exceptional minerals. Boleite is these kinds of an abnormal and complex mineral which the definition of its chemical composition and crystal framework have gone through a number of revisions because its to start with discovery.
The main specimens of boleite have been identified by Eduoard Cumenge, a French mining engineer. Another scarce halide mineral through the identical place, with the same construction and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are lots of features of boleite which make it of distinct interest to collectors. For another thing, it has an unconventional chemical composition, currently being a hydrated lead copper silver chloride hydroxide. It incorporates major quantities of such metals, with about 49% guide, 14% Δαχτυλιδια Φθηνα copper and nine% silver. Secondly, it's got an interesting crystal composition, considering that ΧÏυσά boleite is always pseudocubically twinned. That is definitely, Each and every dice-like Δαχτυλίδια crystal of boleite is really made up of three rectangular box-like crystals oriented at ideal angles to each other. Boleite also has an exceedingly eye-catching indigo color and many very exceptional transparent crystals are Reduce as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for instance fluorite, boleite is very tender, using a Mohs hardness ranking of only 3 to three.five. It has a vitreous to pearly luster. It can be an unusually dense mineral, with a specific gravity of five.05. Only some minerals, including hematite and cassiterite, ΛευκόχÏυσα have the next density. Boleite's refractive index is additionally incredibly higher at two.03-two.05; larger than sapphire, sphene and demantoid garnet.
In combination with cumengite, there are a number of other minerals connected to boleite, such as pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Together with the deposit in Baja, Mexico, boleite has been found in Broken Δαχτυλιδια Φθηνα Hill in New South Wales, Australia; during the Mammoth District of Arizona in the United States; and while in the Mendip Hills of Somerset, England.
