Abstract Yellowish brown precipitates in samples of Red Sea hot brine have recently been identified as β-FeOOH·$ Cl_{n} $ or akaganéite. Synthetic β-FeOOH·$ Cl_{n} $ has been prepared by hydrolysis of $ FeCl_{3} $-solution for transmission electron microscope studies of the structure of this iron (III) oxide hydroxide. Extreme care has been taken to avoid destabilization of the crystalline compound during preparation of ultrathin sections for the uptake of micrographs. The results indicate that previously reported and debated structures in the size range of 40–60 Å of the somatoidic akaganéite crystals are no attifacts but instead a superimposed structure that is sensitive to washing and drying procedures. This superimposed structure might be important for the uptake of amino acids by β-FeOOH·$ Cl_{n} $ and may perhaps also be suitable for catalytic effects such as prebiotic synthesis of polypeptides.


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    Title :

    The structure of β-FeOOH·$ Cl_{n} $ (akaganeite) and its uptake of amino acids


    Contributors:

    Published in:

    Publication date :

    1984




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    Local classification TIB:    535/3908/4290
    BKL:    44.71 Verkehrsmedizin



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