Stone, minerals and semiprecious of the world stone
Carbonate: Ulexite -->rus
Diagnostic cart.
Na Ca B5 O6 (OH)6 * 5 (H2 O)
Crystal structure triclinic
Hardness on the Mohs scale 2,5
Specific unit weight mass 1,96
Cleavage perfect absolute
Fracture, break wrong
Colors colourless, multicolors
Colors in powder triturate white
Glance (glitter, glare) from glass to silky
Ulexite, or boron-natrium-calcite, televisional stone - due to a fibred structure the effect of "cat's-eye shows up in a mineral". Glance (glitter, glare) silky. Stone possesses properties of light-pipe: if Ulexite to lay on the line of font, letters "appear" on his surface. Television-stone or TV-stone name for this Ulexite. Deposit of minefield mine field occurrence subsoil ulexite is present in Argentina, Chile, Canada, USA (state of Californium, Nevada).
Ulexite - colourless or dirty-white mineral, now and then with greenish haze. Glance (glitter, glare) glassy or silky; mineral slightly transparent in most cases. Crystallized in triclinic Crystal structure. Forms crystals, distinguished with a naked eye. The masses and crusts, consisting of rounded concretion, are more ordinary, sometimes bud-like with a fibred internal structure.
Diagnostic indication.
On occasion Ulexite consists of fibres, comparatively well-organized located in relation to each other. It is condition appearance of characteristic silky brilliance. Ulexite is apt at noticeable bluish (cyan) -green fluorescence in ultraviolet rays. It in many cases can also phosphoresce in the pale straw-yellow style.
Origin provenance genesis.
Ulexite appears as a result of falling of sediment out of solutions in arid terms. Therefore his deposits can have a vast area comparatively.
Deposit minefield mine and use.
Most known Harrows and Valley of Death (California, USA), Ikike (Chile), Bigadich (Turkey) and Prikaspiyskiy region. In Italy found out shallow crystals and thin crusts of ulexite round the outputs of boron plastic sources in Larderello (an area Toskana).
For characteristic brilliance, color and glimmered prolate strip of light polished Ulexite quite often name "cat's-eyes". It is considered that such stone as Ulexite is able to bring over attention of other people to the proprietor, creating the certain halo of attention round them. The modern connoisseurs of mystic properties of stone trust that decoration with a "cat's-eye" can help an ulexite to have influence on other people. Such stone is able to "memorize" individual qualities of the proprietor, although such "informative imprinting" allegedly takes a place not immediately, and only after expiration of great while. At all of similar intriguings properties of ulexite to behave to the stone with such name follows carefully, as a world market is literally saturated "Ulexite", which on a check appear usual glass with the different including.
Ulexite (optical). Boron, Californium, USA. A photo: © A.A. Evseev.
Ulexite (optical). Boron, Californium, USA. A photo: © A.A. Evseev.
Ulexite, Cramer mine. Boron, Californium, USA. A photo: © A.A. Evseev.
Ulexite. Panderma (area), Turkey. . A photo: © A.A. Evseev. Ulexite. Tumour with a confusingly-fibred structure.
Kerch peninsula, Crimea, Ukraine, CIS. A photo: © A.A. Evseev.
