Fig.1-39 (a) SR-PEEM image of weathered biotite containing 2 wt% Cs and (b) Comparison of the X-ray-absorption spectrum between weathered biotite containing Cs and CsNO3
(a) The white portion shows the high-Cs concentration. (b) We found that the chemical state of Cs in clay is similar to CsNO3 and that Fe with a trivalent-oxidation state (Fe3+) is present.
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