Boleite was first uncovered in Boleo, Mexico in 1891, in the area in the Baja peninsula that is becoming popular for unusual minerals. Boleite is this sort of an unusual and sophisticated mineral which the definition of its chemical composition and crystal construction have undergone quite a few revisions considering the fact that its initially discovery.
The primary specimens of boleite had been found out by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral in the exact site, with an identical structure and a rather distinct chemical composition, was named cumengite in honor of Cumenge.
There are many options of boleite that make it of specific fascination to collectors. For one thing, it's got an strange chemical composition, getting a hydrated lead copper silver chloride hydroxide. It has important quantities of those metals, with about 49% direct, 14% copper Δαχτυλιδια skroutz and nine% silver. Secondly, it's a fascinating crystal composition, given that boleite is often pseudocubically twinned. That is certainly, Every dice-like crystal of boleite is Δαχτυλιδια skroutz really made up of three rectangular box-like crystals oriented at suitable angles to each other. Boleite also has ΑσημÎνια Δαχτυλίδια an exceedingly desirable indigo coloration and several Δαχτυλίδια very exceptional transparent crystals are already Reduce as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, for instance fluorite, boleite is kind of comfortable, with a Mohs hardness score of only three to 3.five. It has a vitreous to pearly luster. It truly is an unusually dense mineral, with a selected gravity of 5.05. Only some minerals, like hematite and cassiterite, have an increased density. Boleite's refractive ΧÏυσά index can also be incredibly higher at two.03-two.05; greater than sapphire, sphene and demantoid garnet.
Besides cumengite, there are a number of other minerals linked to boleite, including pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Together with the deposit in Baja, Mexico, boleite has long been found in Broken Hill in New South Wales, Australia; from the Mammoth District of Arizona in the United States; and while in the Mendip Hills of Somerset, England.
