Boleite was 1st found in Boleo, Mexico in 1891, inside a location with the Baja peninsula that is becoming recognized for uncommon minerals. Boleite is such an unconventional and sophisticated mineral the definition of its chemical composition and crystal structure have been through many revisions considering that its initial discovery.
The first specimens of boleite were being learned by Eduoard Cumenge, a French mining engineer. One more rare halide mineral within the similar area, with a similar composition and a slightly various chemical composition, was named cumengite in honor of Cumenge.
There are several options of boleite that make it of particular fascination 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% lead, fourteen% Δαχτυλίδια copper and 9% silver. Next, it has an interesting crystal structure, considering the fact that boleite is usually pseudocubically twinned. That is, Just about every cube-like crystal of boleite is definitely composed of a few rectangular box-like crystals oriented at correct angles to one another. Boleite also has an extremely interesting indigo colour and some quite ΧÏυσά & ΛευκόχÏυσα Δαχτυλίδια rare clear crystals have been Minimize as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, such as fluorite, boleite is kind of gentle, that has a Mohs hardness rating of only ΧÏυσά & ΛευκόχÏυσα Δαχτυλίδια three to three.5. It's a vitreous to pearly luster. It is an unusually dense mineral, with a certain gravity of five.05. Only a few minerals, for instance hematite and cassiterite, have Δαχτυλιδια swarovski a greater density. Boleite's refractive index is likewise extremely significant at 2.03-2.05; bigger Δαχτυλιδια bulgari than sapphire, sphene and demantoid garnet.
As well as cumengite, There are a selection of other minerals related to boleite, like pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
In addition to the deposit in Baja, Mexico, boleite has become located in Broken Hill in New South Wales, Australia; inside the Mammoth District of Arizona in The usa; and in the Mendip Hills of Somerset, England.
