Wavelength‐resolved optically‐detected X‐ray absorption experiments are described that monitor the emission from naturally occurring phase‐exsolved aluminosilicate feldspars, when exciting across the Ca and K L 2,3 core levels. The results from a selection of example cases are presented that demonstrate the power of the technique in examining the structural and optical properties of phase segregated materials that could not easily be achievable by other methods. The results highlight that in these materials, extrinsic point defects such as Mn 2+ and Fe 3+ can also become preferentially associated with particular exsolved phases. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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Poolton et al. (2004) studied this question.
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