Boleite was initial uncovered in Boleo, Mexico in 1891, within a region from the Baja peninsula that has become famous for scarce minerals. Boleite is these an strange and complicated mineral that the definition of its chemical composition and crystal composition have gone through numerous revisions given that its to start with discovery.
The initial specimens of boleite were discovered by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral from your same locale, with the same construction and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are numerous attributes of boleite which make it of distinct interest to collectors. For something, it has an strange chemical composition, currently being a hydrated lead copper silver chloride hydroxide. It incorporates important quantities of those metals, with about 49% guide, fourteen% copper and 9% silver. Next, it's a fascinating crystal framework, given that boleite is often pseudocubically twinned. That is certainly, Every dice-like crystal of boleite is really made up of three rectangular box-like crystals oriented at suitable angles to each other. Boleite also has an exceptionally desirable indigo coloration and many really rare transparent crystals have been Slice as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, like fluorite, boleite is sort of Δαχτυλιδια Φθηνα delicate, that has a Mohs hardness rating of only three to 3.5. It's got a vitreous to pearly luster. It can be an unusually dense mineral, with a certain gravity of Δαχτυλιδια ΜονοπετÏα five.05. Just a few minerals, which include hematite and cassiterite, have a greater density. Boleite's refractive index is usually really superior at 2.03-two.05; higher ΧÏυσά than sapphire, sphene and demantoid garnet.
Together with cumengite, There are a selection of ΧÏυσά & ΛευκόχÏυσα Δαχτυλίδια other minerals linked to boleite, together with pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
As well as the deposit in Baja, Mexico, boleite has long been found in Broken Hill in New South Wales, Australia; from the Mammoth District of Arizona ΛευκόχÏυσα in the United States; and inside the Mendip Hills of Somerset, England.
