Abstract
We present a solid solution model, able to take into account short-range interactions up to the third nearest neighbor. This model has been applied to illite/smectite mixed-layer clay minerals and tests the relative thermodynamic stability of each illite/smectite stacking sequence. The non-ideal energy terms have been calculated, showing a strong decrease of the interaction energy as the distance between elements grows. From ΔG m calculations the model predicts the following succession in I/S stacking sequences as X i tends to 1:R1, R2 and then R3. This succession agrees well with some mineralogical observations in natural series.
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Received: July 12, 1996 / Revised, accepted: March 21, 1997
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Blanc, P., Bieber, A., Fritz, B. et al. A short range interaction model applied to illite/smectite mixed-layer minerals. Phys Chem Min 24, 574–581 (1997). https://doi.org/10.1007/s002690050075
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DOI: https://doi.org/10.1007/s002690050075