Boleite was initially learned in Boleo, Mexico in 1891, in a very area on the Baja peninsula that is becoming recognized for rare minerals. Boleite is such an unconventional and sophisticated mineral the definition of its chemical composition and crystal structure have been through various revisions due to the fact its initially discovery.
The primary specimens of boleite had been learned by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral from your same locale, with the same structure and a rather distinct chemical composition, was named cumengite in honor of Cumenge.
There are numerous features of boleite which make it of certain desire to collectors. For one thing, it's got an abnormal chemical composition, becoming a hydrated guide copper silver chloride hydroxide. It is made up of substantial portions of these metals, with about forty nine% lead, fourteen% copper and nine% silver. Secondly, it's got an interesting crystal composition, due to the fact boleite is always pseudocubically twinned. That may be, Every single cube-like crystal of boleite is in fact composed of 3 rectangular box-like crystals oriented at correct angles to one another. Boleite also has an extremely interesting indigo shade and some quite Δαχτυλίδια rare clear crystals happen to be Slice as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, like fluorite, boleite is sort of delicate, that has a Mohs hardness rating of only three to 3.5. It's got a vitreous to pearly luster. It really is an ΧÏυσά & ΛευκόχÏυσα Δαχτυλίδια unusually dense mineral, with a selected gravity of 5.05. Only a few minerals, for example hematite and cassiterite, have a higher density. Boleite's refractive index Δαχτυλιδια skroutz can be very substantial at two.03-2.05; better than sapphire, sphene and demantoid garnet.
As well as cumengite, There are a selection Δαχτυλίδια of other minerals connected with boleite, together with pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Along with the deposit in Baja, Mexico, boleite has actually been found in Broken Hill in New South Wales, Australia; while in Δαχτυλιδια Γυναικεια the Mammoth District of Arizona in the United States; and inside the Mendip Hills of Somerset, England.
