Spectrum Label C O Mg Al Si P S Cl K Ca Ti Fe Cu Zn Total Spectrum 1 30.1 22.75 0.42 2.18 4.4 0.32 0.52 0.71 0.84 0.34 0.13 1.29 33.84 2.16 100 Spectrum 2 5.53 6.69 0.25 0.4 0.32 0.41 0.13 86.26 100 Spectrum 3 10.79 23.42 0.66 2.88 5.99 0.43 0.78 0.73 0.94 0.45 0.24 1.8 46.97 3.92 100