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Tourmaline (BiXi)
Bixi, which mineral scientific name tourmaline, it is a kind of boron silicate mineral, still the most abundant mineral, its color is mainly red, yellow, blue, green, purple, brown, black and so on. The Bixi's chemical formula is very complex which be written as (Na , Ca) (Mg , Fe2 +, Fe3+,Li,Al)3AL6[Si6O18](Bo3)3(OH; F)4. Its crystal belongs to the three sides crystal which mostly show short column , long column or needle column form , the both end has different conical surfaces, section take the form of spherical trigonometry, crystal except that black, colourless and opaque , generally can see dichroism obviously. The cylinder is long usually including much more element Fe and Mg, taking the form of tripartite column with element Mg, the crystal is crassitude; The lithium tourmaline often takes the form of needle. 1, Shape, Classification ownership, performance state
The products classification of tourmaline are mainly divided into several kinds from color, structure, composition content,etc.:
Color: Pink, Green, Black, White, Brown, Yellow and so on.
Structure: Crystal tourmaline, columniatioin form tourmaline, tripartite form awl brilliant tourmaline, spherics tourmaline, radial tourmaline (fibrous), latent crystalloid tourmaline,etc.
Ingredient: Magnesium tourmaline, Iron tourmaline, Sodium manganese, Chrome tourmaline and so on.
2, The spec. and granule of product
3, The structure taken after be produced nanometer powder
The result tested after air current and wet grinding:
The electron microscope (SEM) will measure the image to enlarge by 3.6 ten thousand times: Tourmaline being globular, distributing evenly, particle identical, probably 70-100NM, if undergo the electron microscope test of transmission, part of (TEM) fibrous in shape that get some particle long to exceed 200NM. Short foot-path about about 30NM. How solve shape synchronized, must use air current rub and wet, can make a granule globular structure of product. At the same time,Reuse the polishing instrument of nanometer to further polish after making nanometer.
4, The examine of composition compared and physical characteristic
It is use the atom spectrum and the electronic probe that synthesize the test that can obtain products test, such as, magnesium tourmaline, iron tourmaline, sodium manganese tourmaline, chromium tourmaline and chemical molecular formula. The chemical composition of Bixi and physical characteristic.
Title Chemical composition Proportion Refraction rate Color
Lithium tourmaline Na Al，Li 3.03-3.10 1.615-1.655 Pink, Red,Blue,Yellow,Achromatism.
Calcium lithium tourmaline Ca Al，Li 3.02 1.637-1.621
5, The change of surface alive of tourmaline
Reflect the research object of the structural unit of chemical activity of surface of tourmaline increases with decrease of the granularity of tourmaline, it is the biggest of the active pace of change of chemistry of surface, especially between 80-60 granularity of nanometers
6, Practical application
While practical application, should guarantee the tourmaline particle has very good structural characteristics, and also make the particle as tiny as possible, the best nanometer particle is: 75-120 nanometer.
7, Distinguish in the producing area ( Xinjiang material and Brazil material)
Its structure is different for the different producing areas of Bixi:
Xinjiang area: Bixi is mainly the pegmatite of brilliant hole, mainly intergrowth with lepidolite, emerald, crystal, topaz, purple apatite, yellowish green spodumene, aquamarine,etc.
Brazil: Bixi is mainly a placer, mainly intergrowth with yellow gem, amethyst, diamond.
8, Application scope (packing well)
Black (apply more extensively): Water treatment, the function pottery, land improved, health care and functional textile field of environmental protection.
Pink, white (employ more extensive industy): Apply in Hi-tech field, such as, Textile, cosmetics, coating, medical equipment, medicine, health product, underwear, bed clothes, gasoline economizer, electric splint, pottery, car surface treatment, purify air and biological engineering.
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