● ATextile fiber tourmaline (Tourmaline)
tourmaline (Tourmaline) is the tourmaline race mineral always stated that, is take contains the boron as the characteristic aluminum, the sodium, hard, the magnesium, the lithium ring structure silicate mineral, the structural formula is Na (Mg,Fe,Mn,Li,Al) 3Al6[Si6O12][BO3] 3 (OH,F) 4. According to the different isomorph, may divide into the iron tourmaline, the magnesium tournaline and the lithium tourmaline. The tourmaline crystal structure is the trigonal system, the symmetry is L33P, crystal Chang Chengduan columnar, long columnar or acicular, the cylinder has the longirudinal striation, traverses the delivering in person spherical triangle, the aggregate assumes acicular, fibrous or radiated, sometimes assumes granular or aphanitic massive, but color along with ingredient different, has the black red (including Fe), (contains Mn, Li, Cs richly), the brown-yellow (including Cr), colorless transparent rare; The glassy luster, degree of hardness 7~7.5, does not have the cleavage, density 2.9~3.5g/cm3, Has the pyroelectricity and the piezoelectricity. The tourmaline took one new industry mineral, in domains and so on environmental protection, electron, medicine, chemical industry, light industry, building materials, as a result of the mineral unique nature and the product high added value, receives the various countries to take generally.
The tourmaline chemical composition is complex, is take contains the boron as the characteristic aluminum, the sodium, hard, the magnesium, the lithium ring structure silicate mineral. Produces generally in the flowered hillock pegmatite and the high temperature was mad in the hydrothermal ore deposit, is one of one kind of typical high temperature pneumatogenic minerals.
the textile fiber tourmaline mainly uses raw material for the health care profession with the increase or the filtration; Moreover the tourmaline also has is suitable for other non-gem use the transformation performance, such as the pyroelectricity, the piezoelectricity, the transparent crystal longitudinal section have characteristics and so on polarized light and polychromy, the tourmaline also may apply in industries and so on the electronics industry, acousto-optic material as well as grinding compound.
|
