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American Mineralogist; February 2007; v. 92; no. 2-3; p. 424-428; DOI: 10.2138/am.2007.2441
© Mineralogical Society of America
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Figure 3


FIGURE 3. (top) Results of site occupancy studies of orthopyroxenes equilibrated at 900–1000 °C, including those from this study. The dashed horizontal lines represent the equation formulated by Wang et al. (2005) to relate lnKD to Fs content at these temperatures. The line does not adequately represent the Fe partitioning in samples with higher Fe contents. (bottom) KD values from the current study using M1 and M2 occupancies calculated from a range of C values based on different, arbitrarily selected ratios of recoil-free fraction for the two sites. No choice of value for C will result in a horizontal line of equal KD values.





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