Boleite was initially uncovered in Boleo, Mexico in 1891, in the area in 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 framework have gone through a number of revisions since its to start with discovery.
The 1st specimens of boleite have been identified by Eduoard Cumenge, a French mining engineer. Another scarce halide mineral with the identical location, with the same construction and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are lots of attributes of boleite which 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 those metals, with about 49% guide, 14% copper and nine% silver. Secondly, it's a fascinating crystal composition, considering that boleite is always pseudocubically twinned. That is definitely, Each and every dice-like crystal of boleite is really made up of three rectangular box-like crystals oriented at Δαχτυλιδια ΜονοπετÏα ideal angles to each other. Boleite also has an exceedingly eye-catching indigo color Δαχτυλιδια Φθηνα and many quite scarce clear crystals have been Minimize as gemstones.
Boleite in ΧÏυσά MatrixBoleite in Matrix
Like other halide minerals, like fluorite, boleite is kind of gentle, Δαχτυλίδια that has a Mohs hardness rating of only three to three.5. It's a vitreous to pearly luster. It is an unusually dense mineral, with a certain gravity of five.05. Just a few minerals, for instance hematite and cassiterite, have a greater density. Boleite's refractive index is likewise extremely significant at 2.03-2.05; bigger 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, Δαχτυλιδια Γυναικεια England.
