Figure 1
Li K-edge spectra of our sample suite. The standards (black), the LAS minerals (blue) with increasing SiO2 content, the phosphate minerals (pink), tourmaline (green) and the phyllosilicates (orange) are maximal intensity normalized. The dotted lines are located at 61 eV and 65 eV and serve as a guide for the eyes when comparing the different spectra (same locations for all figures). Note that the proximity of the Fe M2,3-edge and Mn M2,3-edge to the Li K-edge creates overlapping edge contributions and these complications are discussed in the text. |