Beach | Riachuelos | ||||||||||||
Sample | RIA1 | RIA2 | RIA3 | RIA4 | RIA5 | RIA6 | RIA7 | RIA8 | RIA9 | RIA10 | RIA11 | RIA12 | RIA13 |
SiO2 | 63.6 | 60.2 | 61.4 | 58.1 | 55.9 | 62.3 | 63.4 | 59.5 | 58.8 | 60.1 | 58.0 | 60.5 | 57.7 |
TiO2 | 0.96 | 1.07 | 0.67 | 0.90 | 0.82 | 1.03 | 1.04 | 0.76 | 1.09 | 1.06 | 1.13 | 0.72 | 0.96 |
Al2O3 | 14.4 | 13.9 | 13.5 | 14.1 | 12.2 | 14.2 | 15.4 | 14.2 | 14.9 | 13.3 | 11.1 | 15.7 | 12.4 |
Fe2O3a | 5.93 | 6.71 | 5.71 | 5.90 | 6.23 | 6.52 | 6.19 | 6.73 | 6.80 | 7.01 | 8.09 | 6.40 | 6.75 |
MnO | 0.08 | 0.10 | 0.05 | 0.09 | 0.10 | 0.09 | 0.08 | 0.06 | 0.08 | 0.10 | 0.13 | 0.06 | 0.10 |
MgO | 2.58 | 3.13 | 3.43 | 2.67 | 3.46 | 3.07 | 2.22 | 2.44 | 3.70 | 3.48 | 5.27 | 2.23 | 3.32 |
CaO | 5.09 | 6.19 | 4.85 | 7.64 | 9.96 | 5.57 | 4.75 | 4.96 | 4.59 | 6.55 | 7.95 | 5.95 | 7.86 |
Na2O | 3.07 | 2.88 | 2.91 | 2.69 | 2.19 | 2.92 | 3.16 | 2.72 | 2.95 | 2.80 | 2.08 | 3.17 | 2.67 |
K2O | 2.10 | 1.90 | 1.90 | 1.75 | 1.45 | 1.97 | 2.26 | 2.23 | 2.20 | 1.77 | 1.33 | 1.84 | 1.69 |
P2O5 | 0.20 | 0.23 | 0.05 | 0.24 | 0.24 | 0.20 | 0.12 | 0.05 | 0.04 | 0.25 | 0.23 | 0.04 | 0.24 |
LOI | 1.12 | 2.76 | 4.94 | 4.29 | 6.16 | 1.08 | 0.98 | 5.88 | 4.65 | 2.54 | 2.78 | 3.01 | 5.62 |
Sum | 99.1 | 99.2 | 99.5 | 98.4 | 98.7 | 98.9 | 99.5 | 99.6 | 99.8 | 98.9 | 98.1 | 99.6 | 99.3 |
CIX | 73.6 | 74.5 | 73.8 | 76.1 | 77.0 | 74.3 | 74.0 | 74.1 | 74.3 | 74.4 | 74.3 | 75.9 | 74.1 |
Beach | Riachuelos | Palma Sola | |||||||||||
Sample | RIA14 | RIA15 | Mean ± 1 s (n = 15) | PAL1 | PAL2 | PAL3 | PAL4 | PAL5 | PAL6 | PAL7 | PAL8 | PAL9 | |
SiO2 | 55.8 | 58.9 | 59.6 ± 2.38 | 80.5 | 77.6 | 76.4 | 76.1 | 74.4 | 78.4 | 78.5 | 80.5 | 76.5 | |
TiO2 | 1.37 | 1.12 | 0.98 ± 0.18 | 0.39 | 0.49 | 0.56 | 0.54 | 0.77 | 0.46 | 0.61 | 0.48 | 0.58 | |
Al2O3 | 12.9 | 14.6 | 13.80 ± 1.26 | 9.21 | 9.98 | 10.3 | 9.96 | 10.1 | 9.87 | 7.05 | 8.20 | 10.2 | |
Fe2O3a | 9.19 | 6.67 | 6.72 ± 0.89 | 2.77 | 3.20 | 3.82 | 3.59 | 4.76 | 3.00 | 4.10 | 3.21 | 3.73 | |
MnO | 0.15 | 0.09 | 0.09 ± 0.02 | 0.03 | 0.04 | 0.04 | 0.04 | 0.05 | 0.03 | 0.06 | 0.04 | 0.04 | |
MgO | 5.57 | 2.74 | 3.29 ± 0.99 | 0.87 | 1.06 | 1.37 | 1.46 | 1.74 | 0.85 | 2.43 | 1.24 | 1.13 | |
CaO | 8.24 | 5.58 | 6.38 ± 1.60 | 1.97 | 2.31 | 2.65 | 2.78 | 3.03 | 2.22 | 3.47 | 2.31 | 2.48 | |
Na2O | 2.54 | 2.96 | 2.78 ± 0.32 | 1.90 | 1.98 | 2.12 | 2.04 | 2.02 | 2.04 | 1.37 | 1.59 | 1.99 | |
K2O | 1.55 | 2.07 | 1.87 ± 0.28 | 1.73 | 1.68 | 1.63 | 1.57 | 1.59 | 1.74 | 1.19 | 1.52 | 1.68 | |
P2O5 | 0.28 | 0.04 | 0.16 ± 0.09 | 0.03 | 0.02 | 0.06 | 0.03 | 0.05 | 0.02 | 0.03 | 0.04 | 0.03 | |
LOI | 1.72 | 4.61 | 3.48 ± 1.81 | 0.89 | 1.04 | 1.11 | 1.13 | 1.13 | 1.05 | 0.62 | 0.73 | 1.08 | |
Sum | 99.3 | 99.3 | 99.10 ± 0.48 | 100.3 | 99.4 | 100.1 | 99.2 | 99.6 | 99.6 | 99.4 | 99.9 | 99.4 | |
CIX | 75.9 | 74.3 | 74.8 ± 1.0 | 71.7 | 73.1 | 73.4 | 73.4 | 73.8 | 72.3 | 73.3 | 72.6 | 73.6 | |
Beach | Palma Sola | ||||||||||||
Sample | PAL10 | PAL11 | PAL12 | PAL13 | PAL14 | PAL15 | PAL16 | PAL17 | PAL18 | PAL19 | PAL20 | Mean ± 1 s (n = 20) | |
SiO2 | 74.0 | 74.9 | 78.9 | 77.7 | 70.8 | 71.9 | 79.0 | 77.6 | 78.0 | 79.8 | 75.7 | 76.9 ± 2.64 | |
TiO2 | 0.59 | 0.54 | 0.48 | 0.87 | 0.58 | 0.42 | 0.66 | 0.42 | 0.72 | 0.55 | 0.51 | 0.56 ± 0.12 | |
Al2O3 | 10.6 | 9.92 | 9.18 | 7.70 | 8.05 | 7.89 | 8.25 | 7.32 | 8.82 | 8.28 | 9.07 | 9.00 ± 1.10 | |
Fe2O3a | 4.06 | 3.84 | 3.14 | 5.02 | 4.04 | 3.17 | 3.93 | 3.16 | 4.25 | 3.49 | 3.59 | 2.69 ± 0.58 | |
MnO | 0.05 | 0.05 | 0.04 | 0.06 | 0.06 | 0.05 | 0.05 | 0.04 | 0.05 | 0.04 | 0.05 | 0.04 ± 0.01 | |
MgO | 1.40 | 1.53 | 1.05 | 2.03 | 1.90 | 1.75 | 1.41 | 1.56 | 1.45 | 1.36 | 1.53 | 1.46 ± 0.39 | |
CaO | 3.16 | 3.71 | 2.36 | 2.97 | 6.79 | 6.96 | 2.51 | 3.59 | 2.41 | 2.31 | 4.19 | 3.21 ± 1.38 | |
Na2O | 2.22 | 1.97 | 1.89 | 1.51 | 1.54 | 1.48 | 1.64 | 1.39 | 1.72 | 1.68 | 1.72 | 1.79 ± 0.26 | |
K2O | 1.63 | 1.55 | 1.63 | 1.29 | 1.28 | 1.25 | 1.46 | 1.28 | 1.50 | 1.49 | 1.47 | 1.51 ± 0.17 | |
P2O5 | 0.09 | 0.10 | 0.03 | 0.02 | 0.11 | 0.09 | 0.03 | 0.07 | 0.04 | 0.04 | 0.08 | 0.05 ± 0.03 | |
LOI | 1.51 | 1.92 | 0.98 | 0.66 | 4.14 | 4.57 | 0.77 | 1.74 | 0.99 | 0.67 | 2.30 | 1.45 ± 1.09 | |
Sum | 99.3 | 100.0 | 99.7 | 99.8 | 99.3 | 99.6 | 99.7 | 98.2 | 99.9 | 99.6 | 100.2 | 99.6 ± 0.45 | |
CIX | 73.4 | 73.8 | 72.3 | 73.3 | 74.1 | 74.2 | 72.7 | 73.2 | 73.2 | 72.4 | 74.1 | 73.2 ± 74.2 |