Today in the lab I finally finished the thin-sections that I will be investigating as part of my Diploma thesis. I gave them their final touch with a mesh 1200 powder. There is a simple polarisation microscope in the lab allow a quick quality check. I took an ordinary digital camera and held it to the eye-piece. These are some selected results of that. The thin-sections were not yet cleaned, occasional dark spots are left-over polishing powder. No deeper interpretation, yet, I have still to begin with that.
An Oolite in thin-section at low-magnification. Lots of ooids within sparitic cement.
An ooid in high-magnification.
Blue-dyed epoxy has filled the open porosity. Here, rhomboidal dolomite has been dissolved. Undissolved examples directly above.