Table 2.
Presentation of the concentrations in ppm and wt% for C and S. Element: elements analyzed, wt%: weight percentage, n: 109 samples analyzed, Minimum: smallest values in wt%, Q1: 1st quartile (25%), Median (50%), Q3: 3rd quartile (75%), Upper limit: max {x, [x ≤ Q3 + 1.5 * (Q3–Q1)]}, Maximum: highest values, CVR: Robust Coefficient of Variation (percent). < 10: Value below the detection limit (10.0 ppm), ND: not determined
| Trace elements | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Elements | Unit | n | Minimum | Q1 | Median | Q3 | Upper limit | Maximum | % CVR |
| Cu | ppm | 109 | 34.8 | 226.0 | 420.0 | 677.3 | 677.3 | 2497.1 | 72.1 |
| V | ppm | 109 | 60.4 | 163.6 | 183.0 | 195.0 | 195.0 | 227.2 | 14.1 |
| Cr | ppm | 109 | 5.0 | 25.5 | 30.3 | 34.7 | 47.8 | 206.6 | 21.6 |
| Co | ppm | 109 | 7.7 | 25.2 | 26.6 | 29.8 | 38.1 | 46.5 | 9.6 |
| Ni | ppm | 109 | 2.5 | 10.7 | 14.2 | 17.5 | 17.5 | 26.4 | 35.8 |
| Zn | ppm | 109 | 12.0 | 83.5 | 92.2 | 104.0 | 140.0 | 180.3 | 17.3 |
| Rb | ppm | 109 | 27.9 | 63.1 | 69.4 | 75.5 | 93.5 | 146.4 | 13.4 |
| Sr | ppm | 109 | 80.1 | 374.0 | 406.6 | 455.1 | 455.1 | 543.3 | 13.6 |
| Y | ppm | 109 | 19.0 | 21.1 | 22.1 | 23.4 | 26.0 | 27.4 | 7.4 |
| Zr | ppm | 109 | 118.6 | 158.1 | 166.8 | 175.9 | 204.6 | 332.9 | 8.3 |
| Nb | ppm | 109 | 2.5 | 2.5 | 2.5 | 6.0 | 12.7 | 12.7 | ND |
| Ba | ppm | 109 | 271.5 | 348.0 | 374.1 | 405.7 | 470.0 | 751.5 | 10.6 |
| Pb | ppm | 109 | 2.5 | 14.0 | 21.3 | 27.7 | 27.7 | 61.7 | 49.2 |
| Sc | ppm | 109 | 6.3 | 16.3 | 20.3 | 25.5 | 40.0 | 110.1 | 35.1 |
| C | wt% | 109 | 0.2 | 1.2 | 1.5 | 1.8 | 3.1 | 5.6 | 27.3 |
| S | wt% | 109 | 0.02 | 0.1 | 0.1 | 0.3 | 0.3 | 0.9 | 97.2 |
| Hg | ppm | 109 | 0.01 | 0.02 | 0.1 | 0.1 | 0.1 | 0.2 | ND |
| As | ppm | 109 | 10.0 | 10.0 | 10.0 | 20.0 | 55.5 | 134.6 | ND |
| Mo | ppm | 109 | 2.5 | 2.5 | 5.0 | 5.8 | 20.3 | 26.5 | ND |
| Sb | ppm | 109 | 5.0 | 5.0 | 12.6 | 25.6 | 25.6 | 79.4 | ND |
| Ag | ppm | 109 | 0.5 | 0.5 | 1.0 | 1.7 | 1.7 | 7.6 | ND |
| Bi | ppm | 109 | 5.0 | 5.0 | 5.0 | 21.6 | 21.6 | 33.0 | ND |
| W | ppm | 109 | 5.0 | 5.0 | 11.0 | 25.4 | 25.4 | 59.4 | ND |
| Ga | ppm | 109 | 0.5 | 12.2 | 79.3 | 108.7 | 108.7 | 142.0 | 114.0 |