Sample Cross-Polarized Light Observations Draw a few crystals 1 2 3 4 Questions: Minerals and Optical Crystallography 1. In Procedure step #3, you viewed the thin section with only one polarizing film.
2. Compare (and contrast) the four different mineral grain samples displayed in the thin section viewed in Step 3. Consider the following: color differences, some mineral grains appear more rough than others?
Rock B Mineral Name Percent in Field Total 100% #4 Rock C diameter of microscope field = ___________________ cm (nearest tenth) #5 Choose any 5 mineral grains in Rock C (regardless of mineral type).
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