Boleite was 1st identified in Boleo, Mexico in 1891, within a region of the Baja peninsula that happens to be renowned for unusual minerals. Boleite is these kinds of an uncommon and complex mineral which the definition of its chemical composition and crystal construction have undergone several revisions given that its initial discovery.
The first specimens of boleite were being learned by Eduoard Cumenge, a French mining engineer. One more rare halide mineral from the similar area, with a similar composition and a slightly various chemical composition, was named cumengite in honor of Cumenge.
There are many features of boleite which make it of specific fascination to collectors. For something, it's got an abnormal chemical composition, becoming a hydrated guide copper silver chloride hydroxide. It includes significant portions of these metals, with about forty nine% lead, fourteen% copper and nine% silver. Secondly, it's got a fascinating crystal composition, due to the fact boleite is usually pseudocubically twinned. That is, Just about every cube-like crystal of boleite is definitely composed Δαχτυλιδια swarovski of a few rectangular box-like crystals oriented at proper angles to one another. Boleite also has an incredibly appealing indigo shade and a few pretty uncommon Δαχτυλίδια clear crystals have already been Slash as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for example fluorite, boleite Δαχτυλιδια swarovski is quite comfortable, with a Mohs hardness score of only three to 3.five. It has a vitreous to pearly luster. It truly is an unusually Δαχτυλιδια Φθηνα dense mineral, with a specific gravity of 5.05. Just a few minerals, for instance hematite and cassiterite, have a greater density. Boleite's refractive index is usually really superior at 2.03-two.05; higher than sapphire, sphene and demantoid garnet.
Together with cumengite, there are a number Δαχτυλιδια ΜονοπετÏα of 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 in the United States; and while in the Mendip Hills of Somerset, England.
