Boleite was to start with discovered in Boleo, Mexico in 1891, inside of a location on the Baja peninsula that is becoming recognized for uncommon minerals. Boleite is such an unconventional and sophisticated mineral the definition of its chemical composition and crystal structure have been through many revisions considering that its very first discovery.
The very first specimens of boleite ended up uncovered by Eduoard Cumenge, a French mining engineer. A further exceptional halide mineral through the exact same location, with the same construction and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are lots of functions of boleite which make it of unique curiosity to collectors. For another thing, it's an uncommon chemical composition, remaining a hydrated direct copper silver chloride hydroxide. It consists of sizeable quantities of these metals, with about 49% lead, fourteen% copper and 9% silver. Next, it has a captivating crystal composition, due to the fact boleite is usually pseudocubically twinned. That is, Just about Δαχτυλίδια every cube-like crystal of boleite is definitely composed of 3 rectangular box-like crystals oriented at correct angles to one Δαχτυλιδια swarovski another. Boleite also has an extremely attractive indigo shade and some incredibly uncommon clear crystals happen to be Slash as gemstones.
Boleite in MatrixBoleite in Matrix
Like other Δαχτυλιδια Φθηνα halide minerals, including fluorite, boleite is sort 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 Δαχτυλιδια bulgari dense mineral, with a specific gravity of 5.05. Only some minerals, like hematite and cassiterite, have the next density. Boleite's refractive index can also be extremely superior at 2.03-two.05; 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; during the Mammoth District of Arizona in The us; and while in the Mendip Hills Δαχτυλίδια of Somerset, England.
