Boleite was initial learned in Boleo, Mexico in 1891, in a very area in the Baja peninsula that is now well-known for rare minerals. Boleite is such an unconventional and sophisticated mineral the definition of its chemical composition and crystal structure have been through various revisions due to the fact its 1st discovery.
The initial specimens of boleite were found out by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral in the same site, with the same 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 desire to collectors. For something, it's got an abnormal chemical composition, being a hydrated guide copper silver chloride hydroxide. It includes significant portions of these metals, with about forty nine% lead, fourteen% copper and 9% silver. Next, it has an interesting crystal structure, considering the fact that boleite is usually pseudocubically twinned. That's, Just about every cube-like crystal of boleite is definitely composed of a few rectangular box-like crystals oriented at correct angles to one another. Boleite also has an extremely attractive indigo shade and some quite uncommon clear crystals happen to be Slice as gemstones.
Boleite in MatrixBoleite in Matrix
Like other halide minerals, including fluorite, Δαχτυλιδια Φθηνα boleite is sort of delicate, which has a Mohs hardness rating of only three to 3.five. It's got a vitreous to pearly luster. It really is an unusually dense mineral, with a selected gravity of 5.05. Just a few minerals, such as hematite and cassiterite, have an increased density. Boleite's refractive index is also quite high at 2.03-two.05; greater than sapphire, sphene Δαχτυλιδια ΜοντεÏνα and demantoid garnet.
Besides cumengite, there are a number of other minerals linked to boleite, including pseudoboleite, chloroxiphite, paralaurionite, matlockite, Δαχτυλιδια ΜοντεÏνα chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Together with the deposit in Baja, Mexico, boleite Δαχτυλιδια ΜονοπετÏα has long been found in Damaged Hill in New South Wales, Australia; during the Mammoth District of Arizona in ΧÏυσά the United States; and while in the Mendip Hills of Somerset, England.
