Boleite was 1st 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 complicated 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 uncovered by Eduoard Cumenge, a French mining engineer. Yet another rare halide mineral within the similar area, with a similar composition and a slightly different chemical composition, was named cumengite in honor of Cumenge.
There are several capabilities of boleite that make it of certain interest to collectors. For something, it has an strange chemical composition, currently being a hydrated lead copper silver chloride hydroxide. It has considerable quantities of those metals, with about forty nine% direct, 14% copper and nine% silver. Secondly, it's a fascinating crystal composition, due to the fact boleite is always ΧÏυσά pseudocubically twinned. That may be, Just about every cube-like crystal of boleite is definitely composed of 3 rectangular box-like crystals oriented at correct angles to one another. Boleite also has an extremely appealing indigo coloration and several ΑσημÎνια Δαχτυλίδια very unusual transparent crystals are Reduce as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, which include fluorite, boleite is fairly soft, by using Δαχτυλίδια a Mohs hardness rating of only 3 to three.5. It's a vitreous to Δαχτυλιδια Γυναικεια pearly luster. It is an unusually dense mineral, with a certain gravity of five.05. Just a few minerals, which include hematite and cassiterite, have a greater density. Boleite's refractive index is usually really superior at 2.03-two.05; ΧÏυσά Δαχτυλίδια higher than sapphire, sphene and demantoid garnet.
Together with cumengite, There are a selection of other minerals connected with boleite, together with pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
As well as the deposit in Baja, Mexico, boleite has long been found in Damaged Hill in New South Wales, Australia; while in the Mammoth District of Arizona in America; and within the Mendip Hills of Somerset, England.
