| CRYSTAL STRUCTURE OF A NEW PHOSPHATIC MINERAL——QINGHEIITE |
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| 引用本文： | 马喆生,施倪承,彭志忠.CRYSTAL STRUCTURE OF A NEW PHOSPHATIC MINERAL——QINGHEIITE[J].中国科学B辑(英文版),1983(8). |
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| 作者姓名： | 马喆生 施倪承 彭志忠 |
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| 作者单位： | Beijing Graduate School of Wuhan Geological College，Beijing，Beijing Graduate School of Wuhan Geological College，Beijing，Beijing Graduate School of Wuhan Geological College，Beijing |
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| 摘 要： | The Qingheiite is a new mineral in the phosphate Wyllieite family. Space group P_(z1)/n, a=11.856, b=12.411, c=6.421, β=114.45°.The correct structure model has been obtained by using the Patterson method and Fourier synthesis. After the Structure parameter refinement, the R-factor reduced to 0.055. The structure analysis indicates that it is a new mineral in Wyllieite family which is Mg-end member in the M(2a) and Mn~(2 )-end member in the M(1). The crystallochemical formula is Na_2NaMn_2Mg_2 (Al, Fe)_2(PO_4)_6.
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