The Mössbauer spectra have been measured for sixteen samples of natural minerals, including siderite, vivianite, garnets, olivines, pyroxenes, and other silicate minerals, The spectra were analyzed for the isomer shifts and quadrupole splittings, and the information thus obtained was correlated with the oxidation states of irons and the crystal structure of minerals. The relative abundances of the various sites present in a given mineral were also estimated by measuring the relative intensities of the absorption peaks in the resolved spectrum of the mineral. All the basic Mössbauer spectral patterns observed for the natural minerals are presented in graphic form.
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Takashima et al. (1968) studied this question.
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