Boleite was to start with uncovered in Boleo, Mexico in 1891, in the area in the Baja peninsula that has become 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 identified by Eduoard Cumenge, a French mining engineer. An additional scarce halide mineral with 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 distinct interest to collectors. For another thing, it has an unusual chemical composition, currently being a hydrated lead copper silver chloride hydroxide. It incorporates major quantities of such metals, with about 49% guide, 14% copper and nine% silver. Secondly, it's got an interesting crystal structure, due to the fact boleite is always pseudocubically twinned. That may be, Every single cube-like crystal of boleite is in fact made up of 3 rectangular box-like crystals oriented at right angles to one another. Boleite also has a really beautiful indigo colour plus some quite rare clear crystals have been Slice as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, including fluorite, boleite is sort of delicate, which has a Mohs hardness score of only three to ΧÏυσά 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 a better density. Boleite's refractive index is also quite high at 2.03-two.05; greater than sapphire, sphene and demantoid garnet.
In combination with cumengite, there are a number Δαχτυλιδια ΜοντεÏνα of other minerals connected to boleite, which includes pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, Δαχτυλίδια bideauxite, atacamite, mendipite and diaboleite.
In combination with the deposit in Baja, Mexico, boleite continues to be present in Damaged Δαχτυλιδια swarovski Hill in New South Wales, Australia; within the Mammoth District of Arizona in The usa; and in the Mendip Hills Δαχτυλιδια bulgari of Somerset, England.
