| 雪硅钙石的矿物学特征研究 |
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| 引用本文： | 何燕,杨会轩,祖恩东.雪硅钙石的矿物学特征研究[J].地质与资源,2016,25(4):317-321. |
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| 作者姓名： | 何燕 杨会轩 祖恩东 |
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| 作者单位： | 昆明理工大学 材料科学与工程学院, 云南 昆明 650093 |
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| 摘 要： | 研究发现,雪硅钙石是一种硅酸钙水化物.根据电子探针分析结果计算得到的化学式为(Ca_(4.424)K_(0.021)Mg_(0.003))4.448(Si_(5.731)Al_(0.728))6.465O_(16)(OH)_2·4H_2O,与经典化学式Ca_5Si_6O_(16)(OH)_2·4H_2O基本一致.通过X射线粉晶衍射结果分析认为,该雪硅钙石属于1.4 nm类型雪硅钙石.雪硅钙石矿物呈放射状纤维集合体,颗粒大小为0.2 mm×0.5 mm×0.3 mm,黄褐色,正低突起,最高干涉色为Ⅰ级黄,二轴晶正光性,光轴角为53°.
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| 关 键 词： | 雪硅钙石 矿物特征 X射线衍射 电子探针 |
| 收稿时间： | 2015-12-14 |
STUDY ON THE MINERALOGICAL CHARACTERISTICS OF TOBERMORITE |
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| HE Yan,YANG Hui-xuan,ZU En-dong.STUDY ON THE MINERALOGICAL CHARACTERISTICS OF TOBERMORITE[J].Geology and Resources,2016,25(4):317-321. |
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| Authors: | HE Yan YANG Hui-xuan ZU En-dong |
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| Institution: | Institute of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | Tobermorite is a kind of calcium silicate hydrate. By electron microprobe analysis, the chemical formula of tobermorite from Nammaw jadeite orebody in Myanmar is(Ca4.424K0.021Mg0.003)4.448 (Si5.731Al0.728)6.465O16(OH)2·4H2O, which is almost consistent with the classic chemical formula of Ca5Si6O16(OH)·2·4H2O. The result of X-ray diffraction analysis(XRD) shows that the studied tobermorite belongs to the 1.4 nm type. Through microscopic observation, XRD and electron microprobe method, this tobermorite occurs as radial fibrous aggregate in yellowish-brown color, with low positive relief and I-order yellow interference color. The mineral is optically biaxial positive with an optic axial angle of 53°. |
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| Keywords: | tobermorite mineralogical characteristics X-ray diffraction electron microprobe |
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