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Table 3 Whole-rock XRF data for Etna ash samples (oxide weight %)

From: The iron-catalysed surface reactivity and health-pertinent physical characteristics of explosive volcanic ash from Mt. Etna, Italy

Sample # SiO2 TiO2 Al2O3 Fe2O3 MnO MgO CaO Na2O K2O P2O5 SO3 LOI Total
INGV_1 48.82 1.61 17.72 10.30 0.171 4.66 9.43 4.16 2.049 0.599 0.045 −0.09 99.48
INGV_2 46.74 1.79 16.96 11.59 0.177 5.16 10.50 3.45 2.039 0.558 0.047 0.03 99.05
INGV_3 47.73 1.78 17.20 11.51 0.169 5.67 10.38 3.28 1.866 0.536 0.080 −0.19 100.00
INGV_4 47.37 1.72 16.84 11.44 0.177 5.68 10.16 3.41 1.928 0.560 0.020 0.09 99.40
INGV_5 46.76 1.81 16.63 11.79 0.181 5.64 10.50 3.52 1.925 0.557 0.123 −0.10 99.34
INGV_6 46.69 1.82 16.72 11.87 0.177 5.41 10.64 3.41 1.931 0.542 0.061 −0.23 99.04
INGV_7 46.59 1.78 16.93 11.86 0.177 5.77 10.48 3.39 1.915 0.527 0.067 −0.24 99.26
INGV_8 47.91 1.69 17.61 10.86 0.172 4.80 10.10 3.71 2.142 0.577 0.060 0.00 99.62
CdF_1 49.28 1.44 19.84 9.10 0.151 3.12 8.98 4.14 1.593 0.620 0.017 0.95 99.22
CdF_2 49.01 1.41 19.52 9.19 0.150 3.43 9.09 4.09 1.540 0.602 0.023 0.70 98.74
CdF_3 48.41 1.46 19.96 9.41 0.154 3.33 8.84 3.83 1.465 0.624 0.038 1.71 99.23
CdF_4 45.21 1.69 19.48 10.56 0.199 3.35 7.66 3.09 1.246 0.711 0.026 5.92 99.15
CdF_5 47.81 1.51 19.80 9.61 0.161 3.39 8.35 3.74 1.441 0.621 0.035 3.13 99.60
CdF_6 48.09 1.59 18.77 8.95 0.122 2.64 6.96 3.74 1.796 0.746 0.240 5.71 99.36
CdF_7 48.57 1.58 18.77 8.64 0.134 2.74 7.37 3.79 1.720 0.715 0.220 4.94 99.19
CdF_8 49.04 1.48 19.67 9.34 0.155 3.41 9.79 4.09 1.545 0.553 0.036 0.24 99.36
ETNA4/11/02 47.46 1.73 16.72 11.56 0.17 5.72 10.10 3.84 2.10 0.61 - −0.18 99.84