Boleite was 1st uncovered in Boleo, Mexico in 1891, in the area from the Baja peninsula that has become well known for scarce minerals. Boleite is these 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. An additional rare halide mineral with the identical place, with an analogous framework and a slightly different chemical composition, was named cumengite in honor of Cumenge.
There are plenty of capabilities of boleite that make it of particular desire to collectors. For something, it has an strange chemical composition, getting a hydrated lead copper silver chloride hydroxide. It has important quantities of such metals, with about 49% guide, 14% copper ΛευκόχÏυσα and nine% silver. Secondly, it's got an interesting crystal structure, due to the fact boleite is usually pseudocubically twinned. ΧειÏοποίητα Δαχτυλίδια That is, Just about every cube-like crystal of boleite is definitely composed of a few rectangular box-like crystals Δαχτυλιδια swarovski oriented at correct angles to one another. Boleite also has an extremely attractive indigo shade and a few incredibly uncommon clear crystals happen to be Slash as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, including fluorite, boleite is quite comfortable, with a Mohs hardness score of only three to 3.five. It's got a vitreous to Δαχτυλίδια 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 can also be incredibly higher at two.03-two.05; greater than sapphire, sphene and demantoid garnet.
In combination with cumengite, there are a number of other minerals connected to boleite, such as pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Besides the deposit in Baja, Mexico, boleite continues to be present in ΧÏυσά Damaged Hill in New South Wales, Australia; in the Mammoth District of Arizona in The us; and during the Mendip Hills of Somerset, England.
