Boleite was initial identified in Boleo, Mexico in 1891, within a region of the Baja peninsula that happens to be renowned for unusual minerals. Boleite is this sort of an uncommon and sophisticated mineral the definition of its chemical composition and crystal construction have undergone various revisions due to the fact its 1st discovery.
The initial specimens of boleite had been found out by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral in the same site, with an identical structure and a rather distinct 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 9% silver. Next, it has an interesting crystal construction, considering the fact that boleite is usually pseudocubically twinned. That's, Just about every cube-like crystal of boleite is definitely composed of 3 rectangular box-like crystals oriented at correct angles to one another. Boleite also has a really interesting indigo colour plus some really rare transparent crystals have ΧÏυσά already been Slash as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, including fluorite, boleite is quite delicate, which has a Mohs hardness score of ΧÏυσά only three to 3.five. It's got a vitreous to pearly luster. It really is an unusually dense mineral, with Δαχτυλιδια swarovski a selected gravity of 5.05. Just a few minerals, such as hematite and cassiterite, have a better density. Boleite's Δαχτυλιδια swarovski refractive index is usually really superior at 2.03-two.05; higher than sapphire, sphene and demantoid garnet.
Together with cumengite, There are a selection of other minerals connected with boleite, which include pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Along with the deposit in Baja, Mexico, boleite has actually been located in Broken Hill in New South Wales, Australia; while in the Mammoth ΧÏυσά Δαχτυλίδια District of Arizona in America; and inside the Mendip Hills of Somerset, England.
