Boleite was initial found out in Boleo, Mexico in 1891, inside a region on the Baja peninsula that has grown to be famous for rare minerals. Boleite is this sort of an abnormal and complicated mineral the definition of its chemical composition and crystal construction have gone through many revisions considering the fact that its first discovery.
The first specimens of boleite had been found by Eduoard Cumenge, a French mining engineer. An additional uncommon halide mineral in the identical area, with an identical construction and a rather unique chemical composition, was named cumengite in honor of Cumenge.
There are plenty of features of boleite which make it of unique fascination to collectors. For something, it has an uncommon chemical composition, becoming a hydrated guide copper silver chloride hydroxide. It incorporates sizeable portions of those metals, with about 49% guide, fourteen% copper and 9% silver. Secondly, it's got an interesting crystal construction, because boleite is always pseudocubically twinned. That is, Each individual dice-like crystal of boleite is definitely made up of three rectangular Δαχτυλιδια skroutz box-like crystals oriented at right angles to one another. Boleite also has an exceptionally eye-catching indigo colour and some pretty scarce transparent crystals happen to be cut as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, which include fluorite, boleite is kind of comfortable, having a Mohs hardness ranking of only 3 to 3.five. It has a vitreous to pearly luster. It is an unusually dense mineral, with a certain gravity of 5.05. Only some minerals, for example hematite and cassiterite, have Δαχτυλιδια Γυναικεια a greater density. Boleite's refractive index is also pretty substantial at 2.03-2.05; better than sapphire, sphene and demantoid garnet.
As well as cumengite, There are a selection Δαχτυλιδια ΜοντεÏνα of other minerals connected with boleite, together with pseudoboleite, chloroxiphite, paralaurionite, matlockite, Δαχτυλιδια bulgari chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
As well as the deposit in Baja, Mexico, boleite has long been found in ΛευκόχÏυσα 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.
