Fe(II)/Fe(III) 'green rust' developed within ochreous coal mine drainage sediment in South Wales, UK

被引：35
|
作者：
Bearcock, J. M. [1 ]
Perkins, W. T.
Dinelli, E.
Wade, S. C.
机构：
[1] Univ Wales, Inst Geog & Earth Sci, Aberystwyth SY23 3DB, Dyfed, Wales
[2] Univ Bologna, I-40126 Bologna, Italy
[3] Univ Wales, Inst Biol Sci, Aberystwyth SY23 3DA, Dyfed, Wales
来源：
MINERALOGICAL MAGAZINE | 2006年 / 70卷 / 06期
关键词：
green rust; coal mine; ochre; drainage; South Wales;
D O I：
10.1180/0026461067060360
中图分类号：
P57 [矿物学];
学科分类号：
070901 ;
摘要：
'Green rusts' are a group of reduced Fe hydroxides with a pyroaurite-like structure. In a new occurrence, green rust is present as a 45-60 mm thick band which lies just below the surface (similar to 4 mm) of an ochreous deposit at an abandoned coal mine site. The sample is characterized by the presence of pm-sized hexagonal crystals which have been identified from SEM imaging. Chemical analyses reveal an Fe(II):Fe(III) ratio which is close to the characteristic 2:1 ratio, and XRD analysis identifies the material by characteristic lattice spacings. The green rust layer also contains aragonite which is not present in the surrounding ochre. Green rusts are important as they have the potential to be used in water treatment.
引用
收藏
页码：731 / 741
页数：11
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