采用X射线衍射(XRD)、扫描电镜与能谱(SEM-EDX)、X射线荧光(XRF)、傅立叶红外光谱(FT-IR)、热分析(DTA-TG)等分析方法,在我国山西马兰煤矿的酸性矿坑排水(AND)沉淀物中首次发现了“斯沃特曼铁矿”(Schwertnmmite)。研究表明,山西马兰煤矿酸性矿坑排水沉淀物中的Sehwertmannite矿物的粒径为0.3—70μm,且分布比较均匀,其BET表面积为44.0650m^2/g;SEM二次电子像显示为球形或椭圆形(聚集体)结构,颗粒大小比较均匀,球的表面有针状毛刺;该矿物的化学式为Fe8O8(OH)4.52(SO4)1.74·4.73H2O。
Schwertmannite was found in the sediment of acid mine drainage from the Malan coal mine, Shanxi Province, China. Based on the methods of XRD, SEM-EDX, XRF, FT-IR, DTA-TG and grain analysis, the results show that schwertmannite with acerate burr on its surface is round or elliptic in shape and 0.3 - 70μm in size. It is homogeneous with a surface area of BET of 44.065 0 m^2/g. The chemical formula of sehwertmannite is Fe8O8(OH)4.52(SO4)1.74·4.73 H2O.