| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.676 | 1.254 | 5.676 | 10.360 |
| Arsenic | As (ppm) | 8.440 | 4.347 | 2.796 | 22.088 |
| Calcium | Ca (wt%) | 1.693 | 0.306 | 1.199 | 2.716 |
| Copper | Cu (ppm) | 38.418 | 12.562 | 8.032 | 62.995 |
| Iron | Fe (wt%) | 3.774 | 0.662 | 2.241 | 4.952 |
| Mercury | Hg (ppm) | 0.124 | 0.124 | 0.013 | 1.462 |
| Magnesium | Mg (wt%) | 1.046 | 0.140 | 0.604 | 1.338 |
| Manganese | Mn (ppm) | 699.463 | 128.615 | 482.399 | 1169.560 |
| Sodium | Na (wt%) | 1.794 | 0.276 | 1.382 | 2.483 |
| Phosphorus | P (wt%) | 0.107 | 0.053 | 0.029 | 0.467 |
| Lead | Pb (ppm) | 12.824 | 7.112 | 2.000 | 53.586 |
| Selenium | Se (ppm) | 0.324 | 0.148 | 0.100 | 0.600 |
| Titanium | Ti (wt%) | 0.480 | 0.054 | 0.336 | 0.597 |
| Zinc | Zn (ppm) | 76.193 | 11.136 | 35.063 | 101.965 |