Some observations on the chemical composition of todorokite
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چکیده
Meyer, H. J. (1969) Struktur und Fehlordnung des Vaterits. Z. Kristalloffr. 128, 183 212. Phemister, D. B., Aounsohn, M. G., and Pepensky, R. (1939) Variations in the cholesterol bile pigment and calcium salts contents of gallstones formed in gallbladder and in bile ducts with the degree of associated obstruction. Ann. Surff. 109, 161-86. Rodgers, A. L. (1983) Common ultrastructural features in human calculi. Micron Microsvopia Aeta, 14, 219-24.
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Crystalline todorokite associated with biogenic debris in manganese nodules.
Platy intergrowths of crystalline todorokite are associated with biogenic debris in the cores of manganese nodules from a site in the Pacific Ocean. Analyses by electron diffraction and transmission electron microscopy demonstrate that this material is composed of tunnels of chains of linked MnO(6) octahedra. The chemical composition, morphology, and stability of the todorokite differ from thos...
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1387-1811/$ see front matter 2008 Elsevier Inc. A doi:10.1016/j.micromeso.2008.06.006 * Corresponding author. E-mail address: [email protected] (F. Liu). A todorokite-type manganese oxide molecular sieve material was successfully synthesized at atmospheric pressure by refluxing treatment of Cu exchanged Na-buserite (named as Cu-OMS-1). TEM (transmission electron microscope) and HRTEM (hig...
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