Boleite was very first identified in Boleo, Mexico in 1891, inside a region in the Baja peninsula that is becoming 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 ended up identified by Eduoard Cumenge, a French mining engineer. Another scarce halide mineral with the identical place, with a similar structure and a slightly distinctive chemical composition, was named cumengite in honor of Cumenge.
There are several options of boleite that make it of specific curiosity to collectors. For one thing, it's got an abnormal chemical composition, being a hydrated guide copper silver chloride hydroxide. It includes significant portions of these metals, with about forty nine% Δαχτυλιδια swarovski lead, fourteen% copper and 9% silver. Next, it has a captivating crystal construction, since boleite is often pseudocubically Δαχτυλιδια bulgari twinned. Which is, Each individual cube-like crystal of boleite is actually composed ΛευκόχÏυσα of a few rectangular box-like crystals oriented at appropriate angles to one another. Boleite also has an incredibly appealing indigo shade and a few pretty unusual transparent crystals are Slice as ΧÏυσά gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, including fluorite, boleite is sort of comfortable, with a Mohs hardness score of only three to 3.five. It's got a vitreous to pearly luster. It really is an unusually dense mineral, with a selected gravity of 5.05. Just a few minerals, such as hematite and cassiterite, have an increased density. Boleite's refractive index is also quite high at 2.03-two.05; greater than sapphire, sphene and demantoid garnet.
Besides cumengite, there are a number of other minerals linked to boleite, including pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Together with the Δαχτυλιδια swarovski 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.
