As an aid in indexing complex plagioclase X-ray powder patterns, integrated (IINT) and peak (IP) intensities are calculated for five plagioclases [low and high albite (An0), oligoclase (An29), bytownite (An80) and anorthite (An100)]. Lorentz-polarization, absorption and multiplicity corrections appropriate to powder mounts are applied to temperature-corrected │F2 which are calculated from single-crystal structure analyses. Graphical expression of IP as a function of 2θ results in plots which are very similar to the comparable experimental X-ray diffraction traces.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.