Boleite was initially identified in Boleo, Mexico in 1891, within a region of the Baja peninsula that has grown to be popular for uncommon minerals. Boleite is this kind of an unusual and sophisticated mineral the definition of its chemical composition and crystal construction have undergone quite a few revisions due to the fact its 1st discovery.
The initial specimens of boleite had been found out by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral in the same site, with an identical structure and a rather distinct chemical composition, was named cumengite in honor of Cumenge.
There are many features of boleite which make it of specific fascination to collectors. For something, it's got an abnormal chemical composition, currently being a hydrated lead copper silver chloride hydroxide. It includes substantial portions of these metals, with about forty nine% lead, fourteen% copper and 9% silver. Next, it's a captivating crystal construction, given that boleite is often pseudocubically twinned. That is certainly, Every dice-like crystal of boleite is really made up of three rectangular box-like crystals oriented at ideal angles to each other. Boleite also has an exceedingly eye-catching indigo color and many extremely exceptional transparent crystals are Reduce as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, Δαχτυλιδια ΜονοπετÏα for instance fluorite, boleite is very tender, using a Mohs hardness ranking of only 3 to three.five. It has a vitreous to pearly luster. It Δαχτυλιδια bulgari can be an unusually dense mineral, with a particular gravity of five.05. Only some minerals, for example hematite and Δαχτυλιδια Φθηνα cassiterite, have a better density. Boleite's refractive index is usually really superior at 2.03-two.05; higher than sapphire, sphene and ΧÏυσά 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.
Along with the deposit in Baja, Mexico, boleite has actually been found in Broken Hill in New South Wales, Australia; while in the Mammoth ΛευκόχÏυσα District of Arizona in America; and inside the Mendip Hills of Somerset, England.
