Note Details

Category: Analysis

Grain 2 Rietmeijer [TEM]: (1) One grain is pure Mg.Fe; (Mg/(Mg+Fe) (mg) = 0.7. Mg,Fe silicates with ~1 wt% CaO and ~1 wt% MnO; mg = ~0.8 to 0.9. Mg.Fe-silicate with variable, 1-4 wt% Al2O3; mg = ~0.7. Probably amorphous, no evidence for crystalline material. FeS +/- Ni abundant in vesicular material. No CLEAN sulfide analysis. See ternary diagram of ONE sulfide grain mixed with silicate-rich material (Fe compositions of the sulfides should be corrected of the Fe from the silicates).