| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.723 | 1.070 | 2.693 | 8.820 |
| Arsenic | As (ppm) | 2.350 | 1.184 | 1.408 | 7.964 |
| Calcium | Ca (wt%) | 1.316 | 1.097 | 0.133 | 6.181 |
| Copper | Cu (ppm) | 23.135 | 4.883 | 13.159 | 33.902 |
| Iron | Fe (wt%) | 5.981 | 0.886 | 2.855 | 8.381 |
| Mercury | Hg (ppm) | 0.171 | 0.365 | 0.032 | 2.039 |
| Magnesium | Mg (wt%) | 0.767 | 0.419 | 0.278 | 2.668 |
| Manganese | Mn (ppm) | 1359.560 | 288.732 | 488.689 | 2197.790 |
| Sodium | Na (wt%) | 0.588 | 0.124 | 0.311 | 1.037 |
| Phosphorus | P (wt%) | 0.037 | 0.013 | 0.008 | 0.071 |
| Lead | Pb (ppm) | 24.643 | 9.315 | 12.355 | 77.284 |
| Selenium | Se (ppm) | 0.290 | 0.078 | 0.108 | 0.531 |
| Titanium | Ti (wt%) | 0.857 | 0.211 | 0.417 | 1.411 |
| Zinc | Zn (ppm) | 76.594 | 8.011 | 54.102 | 97.413 |