This small Python script can be used to index crystallographic orientations of planar deformation features (PDFs) in shocked quartz grains. I use this to quickly check if the U-stage measurements I made on the polarization microscope make sense.
The crystallographic calculations are based on:
Langenhorst, F. (2002). Shock metamorphism of some minerals: Basic introduction and microstructural observations. Bulletin of the Czech Geological Survey, 77(4), 265-282.
Stereographic projection template is based on:
Ferriere, L., Morrow, J. R., Amgaa, T., & Koeberl, C. (2009). Systematic study of universal‐stage measurements of planar deformation features in shocked quartz: Implications for statistical significance and representation of results. Meteoritics & Planetary Science, 44(6), 925-940.
To-do list:
GUI for the input of the measurement values, load/save and image export.