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首页> 外文期刊>Materials science & engineering. C, Biomimetic and supramolecular systems >Micro-goethite in percolated water from Fushui Reservoir in Hubei Province, China
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Micro-goethite in percolated water from Fushui Reservoir in Hubei Province, China

机译：湖北省阜水水库渗滤水中微针铁矿

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The sediments in the percolated water from Fushui Reservoir have been studied. The cause for formation of a special-shaped micro-goethite in the modern depositional environment (reservoir) as well as the action and the significance of microorganism in the biomineralization of iron are discussed in this paper. Tests show that the main cations in the percolated water include Ca~(2+), Mg~(2+), K~+ and Na~+, with minor Fe~(2+) and Fe~(3+), whereas the main anion is HCO_3~-. The sediments from the percolated water are mainly oxidized products of iron. The mineral phase and the form of the particles from percolated water in Fushui Reservoir are studied by such means as powder X-ray diffraction (XRD), differential thermal analysis (DTA), infrared spectroscopic analysis (IR), Moessbauer spectrum, transmission electron microscope (TEM) and scanning electron microscope (SEM). The main mineral phases include goethite, quartz, illite, montmorillonite and small amounts of calcite, only slightly crystallized. The Mossbauer spectral characteristics and the special form of goethite imply that goethite originated from ferric bacteria. The following results can be reached: the sediments in Fushui Reservoir are mainly composed of amorphous ferric hydroxide colloid and weakly crystalline goethite; the genesis of goethite is related with ferric bacteria.
机译：对富水水库渗滤水中的沉积物进行了研究。本文讨论了在现代沉积环境（储层）中形成特殊形状的微针铁矿的成因，以及微生物在铁的生物矿化中的作用和意义。测试表明，渗滤水中的主要阳离子包括Ca〜（2 +），Mg〜（2 +），K〜+和Na〜+，次要的Fe〜（2+）和Fe〜（3+），而主要阴离子为HCO_3〜-。渗滤水中的沉积物主要是铁的氧化产物。通过粉末X射线衍射（XRD），差热分析（​​DTA），红外光谱分析（IR），莫斯鲍尔谱，透射电子显微镜等手段研究了抚水水库渗水的矿物相和颗粒形态。 （TEM）和扫描电子显微镜（SEM）。主要矿物相包括针铁矿，石英，伊利石，蒙脱石和少量方解石，仅微结晶。莫斯鲍尔光谱特征和针铁矿的特殊形式暗示针铁矿起源于三价铁细菌。可以得出以下结论：the水水库的沉积物主要由非晶态氢氧化铁胶体和弱结晶针铁矿组成。针铁矿的成因与铁细菌有关。

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