[TEM]: Many tiny grains of Ca oxides form by decomposition of probable carbonate in the e beam, so there were carbonates on the sample, but he sees definite contamination by calcite (verified by ED) elsewhere on the section, so maybe all of these are contamination. Large grains containing Zr and Al. Large and small grains containing Al2O3 and SiO2 (ratio Al/Si typically 1-2/10). Small Ti-oxide (occasionally Fe-oxides) grains. A very large number of small, thin elongated particles (platelets or needles) that appeared rich in Mg and Si (ratio Mg/Si typically within the range 1/5-3/5) or rich in Al and Si.
| Notes By: | Leroux | Date: |