| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.830 | 0.550 | 4.896 | 8.475 |
| Arsenic | As (ppm) | 6.392 | 1.203 | 2.738 | 13.334 |
| Calcium | Ca (wt%) | 0.648 | 0.225 | 0.294 | 1.680 |
| Copper | Cu (ppm) | 33.040 | 88.084 | 1.447 | 748.108 |
| Iron | Fe (wt%) | 3.120 | 0.448 | 1.974 | 4.895 |
| Mercury | Hg (ppm) | 0.053 | 0.011 | 0.024 | 0.095 |
| Magnesium | Mg (wt%) | 0.638 | 0.140 | 0.294 | 1.010 |
| Manganese | Mn (ppm) | 1334.030 | 258.218 | 722.802 | 2077.610 |
| Sodium | Na (wt%) | 1.124 | 0.212 | 0.668 | 1.704 |
| Phosphorus | P (wt%) | 0.063 | 0.013 | 0.037 | 0.115 |
| Lead | Pb (ppm) | 39.453 | 38.892 | 14.747 | 351.864 |
| Selenium | Se (ppm) | 0.348 | 0.328 | 0.117 | 2.952 |
| Titanium | Ti (wt%) | 0.369 | 0.065 | 0.183 | 0.624 |
| Zinc | Zn (ppm) | 109.619 | 96.859 | 55.343 | 885.933 |