Application of FIB-SEM Techniques for the Advanced Characterization of Earth and Planetary Materials

Figure 6

Analysis of organic matter in carbonaceous chondrites by FIB-STXM-TEM. (a) Showing the preparation of FIB foil from a chip of chondrite matrix. (b) A STXM map showing the distribution of a spectral population characteristic of aromatic-carbonyl-carboxyl/ester bearing macromolecular insoluble organic matter (bright blue features). (c) XANES spectra of organic particles 1 and 2 in (b) and diffuse spectra (fainter blue). (d) The coordinated STEM dark field image of (b) displaying the setting of the organic particles (dark grey). Note the TEM-BF images of particles 1 and 2. Particle 1 occurs as beads, and particle 2 is a vein filling the matrix. Reprinted with permission from Wiley and modified from [73].

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