Mössbauer spectroscopy of green shale from banded iron formation

Das, D. ; Chakrabarti, M. B. ; Majumdar, C. K. ; Bose, M. K. (1986) Mössbauer spectroscopy of green shale from banded iron formation Pramana - Journal of Physics, 27 (1-2). pp. 331-336. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/j_archive/pramana/27/1-2/331-...

Related URL: http://dx.doi.org/10.1007/BF02846347


A green shale from the Precambrian banded iron formation of the Bonai Range, Eastern India, is examined by transmission Mössbauer spectroscopy. The constituent phases are identified to be chlorite, siderite and magnetite. The fractional resonance area of each constituent is computed and the ferrous-ferric ratio determined. The variation of this ratio over the sample is examined. Intensity of the magnetite lines reveals that deviation from stoichiometry is negligible. The observations suggest a transition within short range from silicate-rich facies to carbonate-oxide-rich facies in the studied section.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Mössbauer Spectroscopy; Green Shale; Precambrian Banded Iron Formation; Chlorite; Siderite; Magnetite; Ferrous-Ferric Ratio; Stoichiometry
ID Code:33381
Deposited On:30 Mar 2011 11:04
Last Modified:17 May 2016 16:14

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