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Mössbauer resonance absorption spectrums have been measured for 13 samples of natural and synthetic minerals containing iron, including oxides, oxyhydroxides, biotite, jarosite, ilmenite, and others. The spectrums are analyzed for energy shifts and hyperfine splittings, and information so obtained on internal magnetic fields, electric quadrupole interaction, oxidation states, and correlation with crystal structure is presented.

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