Accuracy of atomic positions in the zunyite structure
The accuracy of positional parameters in the refined zunyite structure is estimated by four different statistical methods, including a comparison of two entirely independent refinements of the structure. The estimates show tolerable agreement, but disagree as to the importance of F_o measurement error in affecting the parameter error. Reliable estimates of ± 0.008 Å (standard deviation) for oxygen coordinates and ± 0.003 Å for silicon and aluminum coordinates are obtained.
Additional Information© 1960 International Union of Crystallography. Received 14 February 1958. Division of the Geological Sciences, Contribution No. 960.
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