Manganese oxide accumulations associated with some soil structural pores. I. morphology, composition and genesis

L. A. Sullivan, A. J. Koppib

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Abstract

The morphology and composition of manganese oxide accumulations associated with the structural pores in a black earth (Typic Pellustert) subsoil layer were examined using light microscopy, electron microscopy, X-ray diffraction and electron micro-analytical techniques. Birnessite was identified as the crystalline manganese oxide phase. There were significant positive correlations between cobalt, calcium and manganese and a significant negative correlation between iron and manganese. It was most probable that both microbial oxidation and auto-oxidation of Mn2+ contributed to the formation of the manganese oxide accumulations in this soil.

Original languageEnglish
Pages (from-to)409-427
Number of pages19
JournalAustralian Journal of Soil Research
Volume30
Issue number4
DOIs
Publication statusPublished - 1992
Externally publishedYes

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