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| 1 | 铜陵新桥矿田褐铁矿矿物组成及成因显示文摘褐铁矿是铁帽型金矿和铁矿的重要矿产类型,但目前对其从矿物学的微观角度研究较少。本文采用粉晶X射线衍射(XRD)以及场发射扫描电镜(SEM)矿物学研究手段,对铜陵矿集区新桥矿田褐铁矿的矿物组成、微结构进行研究。根据矿物组成及微结构将新桥褐铁矿分为两种成因类型:Ⅰ型褐铁矿,该类型褐铁矿主要起源于黄铁矿矿石,矿石多具蜂窝状构造。主要组成矿物为针铁矿,次要矿物为赤铁矿,含有少量石英,针铁矿晶体长度一般介于500 nm^2μm,长度/半径比值(长径比)较大;Ⅱ型褐铁矿,由原生菱铁矿矿石风化而成,矿石多具肾状构造。矿物组成主要为针铁矿,其次为赤铁矿、锰氧化物和伊利石等粘土矿物,针铁矿晶体长度一般小于500 nm,具有较小的长径比。褐铁矿矿物学和微结构不仅可以初步确定原生矿物和矿石类型,而且对寻找铁帽金矿床也具有重要指示意义。 | 刘诗贝 徐亮 陈平 谢巧勤 陈天虎 刘海波 | 2016 | 岩石矿物学杂志2016，35，3： | 8 |
| 2 | 南京栖霞山铅锌矿山中的现代钙华:一种高度富锌和锰的方解石显示文摘金属硫化物矿山开发引发的重金属污染已成为当前急需解决的环境问题.以南京栖霞山铅锌矿采矿巷道壁上的现代钙华为研究对象,利用电子探针、扫描电子显微镜和X射线粉末衍射分析等矿物学手段,分析了钙华中的矿物组成及其重金属元素的赋存形态和分布状况.结果表明钙华的主要矿物成分为方解石.尽管地层水的重金属含量较低,但是钙华中碳酸盐矿物的微量元素含量却较高,最高含量分别为:Mn23.65%,Zn9.60%,Mg0.76%,Fe4.44%和Pb0.66%.钙华在电子探针背散射电子像中呈现出复杂的韵律壳层构造,成分分析表明这种韵律壳层构造与重金属的分布有关.另外,在钙华中见有螺旋状及团絮状物质可能表明微生物参与了钙华的形成过程,并与重金属的富集存在关联.所报道的高度富锌-锰方解石对矿山环境中的重金属污染治理具有可借鉴意义. | 刘婷 王汝成 陆现彩 李娟 胡欢 | 2009 | 科学通报2009，54，5： | 2 |
| 3 | Highly Zn,Mn-rich calcite in calcareous tufa from the Qixiashan Pb-Zn Mine,Nanjing:a possible candidate for Zn-Mn removal from mining impacted waters显示文摘The exploitation of metallic mines may cause serious environmental problems.The removal of the heavy metals from the contaminated mining environments has become an urgent issue.In this paper,the occurrence and distribution of heavy metals in the calcareous tufa collected from the mining laneway of the Qixiashan Pb-Zn Mine in Nanjing were investigated by using multiple mineralogical techniques.Examination by X-ray diffraction spectrum(XRD) shows that calcite is the major compo-nent of the calcareous tufa.Several heavy metals such as Mn,Zn,Mg,Fe and Pb are detected in calcite by means of electron microprobe analysis.Although the heavy metal contents in the hostrock and the formation water are significantly low,the contents of Mn,Zn,Mg,Fe and Pb in the tufa calcite are as high as 23.65 wt%,9.6 wt%,0.76 wt%,4.44 wt% and 0.66 wt%,respectively.The back-scattered electron image shows complex compositional zoning texture in the tufa,which is linked directly to varia-tions in heavy metals,particularly in Mn and Zn.In addition,we also observed floccule and helical precipitations,which may be derived from the metabolism of the microbe.It is deduced that the occurrence and high concentration of heavy metals in tufa may be controlled by the activities of microbes.The results presented in this work suggest that calcite will be an important candidate for the remediation of the heavy metal contamination in mining areas. | LIU Ting WANG RuCheng LU XianCai LI Juan HU Huan | 2009 | Chinese Science Bulletin2009，54，8： | 1 |
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