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2. Sites occupancy of Fe3+ in Garfield nontronite: A spectroscopic study;Bonnin;Phys. Chem. Mineral,1985
3. X-ray absorption spectroscopy and its applications in mineralogy and geochemistry;Brown,1988
4. Coordination of iron in oxide glasses through high-resolution K-edge spectra: information from the pre-edge;Calas;Solid. State Com.,1983
5. Natural occurence of feroxyhite (δ'FeOOH);Carlson;Clays Clay Mineral.,1980