Fig. 2From: Complementary scientific techniques for the study of Mesoamerican greenstone objectsa Photograph of Plaque fragment with Human Head in Profile (2008.79) with detailed SEM image (blue box) and more detailed SEM image (orange box) with elemental mapping of O, Na, Mg, Al, Si, Ca, C, and Fe, respectively, b XRD pattern, and c Raman spectrumBack to article page