Boleite was first learned in Boleo, Mexico in 1891, in the area in the Baja peninsula that is now well known for scarce minerals. Boleite is these types of an strange and complicated mineral that the definition of its chemical composition and crystal composition have gone through numerous revisions because its first discovery.
The main specimens of boleite have been found by Eduoard Cumenge, a French mining engineer. Another scarce halide mineral through the identical location, with an analogous construction and a slightly unique chemical composition, was named cumengite in honor of Cumenge.
There are lots of functions of boleite which make it of unique interest to collectors. For another thing, it has an unconventional chemical composition, currently being a hydrated lead copper silver chloride hydroxide. It incorporates important quantities of such metals, with about 49% guide, 14% copper and nine% silver. Secondly, it's got a fascinating crystal composition, ΧÏυσά given that boleite is often pseudocubically twinned. That is certainly, Every dice-like crystal of boleite is actually made up of three rectangular box-like crystals oriented at appropriate angles to each other. Boleite also has an exceptionally 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 three to 3.five. It has a vitreous to Δαχτυλιδια skroutz pearly luster. It truly is an unusually dense mineral, with a selected gravity of 5.05. Only some minerals, like hematite and cassiterite, have an increased density. Boleite's refractive index can also Δαχτυλιδια Φθηνα be incredibly high at two.03-two.05; greater than sapphire, sphene and demantoid garnet.
Besides cumengite, ΧÏυσά there are a number of other minerals linked to boleite, including pseudoboleite, ΧÏυσά & ΛευκόχÏυσα Δαχτυλίδια chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Together with the deposit in Baja, Mexico, boleite has long been found in Broken Hill in New South Wales, Australia; from the Mammoth District of Arizona in the United States; and while in the Mendip Hills of Somerset, England.
