Tourmaline

    The Na(Mg, Fe, Mn, Li, Al)3 Al6 ［ Si6 O18 ］［ BO3 ］ 3(OH, F)4 s or write into a type：
    NaR3Al6［Si6O18］［BO3］3(OH,F)4。

The chemistry constitute
    The Tourmaline is a kind of salt mineral with sour Peng Huo, then in addition to Huo oxygen framework, also have the ［ the BO3 ］ net anion regiment.Among them Na+partial drive K+replace (OH)with Ca 2+, -can drive F-replace, but have no Al 3+ to replace Si 4+ phenomenon.The R position quality together is like extensively, mainly have 4 to carry member composition, namely:
    Magnesium acetylene (Dravite)R=Mg；
    Black acetylene (Schorl):R=Fe；
    Lithium acetylene (Elbaite):R=Li+Al；
    Sodium manganese acetylene(Tsilaisit)R=Mn。
    Magnesium acetylene-of black acetylene and black cetylene-lithium of the acetylene become two complete qualities to together be like series and the of magnesium acetylene and lithium acetylene together is like for the type of the incompletion quality.Fe 3+ or Cr 3+ can also get into R position and the Cr2 O3 can reach to 10.86% in the chrome acetylene.
    Physical property
    The color is different with the composition:Rich acetylene with the Fe assumes black, enrich acetylene with the Li, Mn and Cs to present rose, also present light blue and enrich acetylene with the Mg often presents brown and yellow, enrich acetylene with the Cr to present deeply green.In addition, the acetylene often has a color to take phenomenon, the perpendicular c stalk is gone toward shape by the center to become a level color to take, or the c stalk  both ends color different.Glass sheen.Have no solution to manage;Sometimes can there is the fission of perpendicular L3.Degree of hardness 7~7.5.Opposite density 3.03~3.25, along with the Fe in the composition, the increment of the Mn content, the opposite density also immediately enlarges.Not only have to press an electricity, but also still have heat to release an electricity.(BE the only pole stalk because of its one-way stalk L3)
    Authenticate a characteristic
    The pillar form crystal form, the pillar noodles contains Zong line, the cross section presents surface of sphere triangle, have no solution reason, high degree of hardness is characteristic.
    Main use
    It presses an electricity and can used for wireless industry;It is hot to release an electricity and can used for a red outside to probe into, make a cold industry.The color and luster fresh and gorgeous and pure Che transparent can make precious stone raw material.(be so called bluish green Xi)

Look forward to your e-mail

North minerals factory

NO.168 gongnong road shijiazhuang city

Tel:86-311-85232125

Skype:denise1984115