| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.099 | 0.784 | 2.578 | 8.123 |
| Arsenic | As (ppm) | 1.620 | 0.492 | 0.406 | 3.452 |
| Calcium | Ca (wt%) | 0.490 | 0.243 | 0.068 | 1.802 |
| Copper | Cu (ppm) | 10.396 | 2.602 | 3.660 | 18.299 |
| Iron | Fe (wt%) | 3.524 | 0.464 | 2.586 | 4.876 |
| Mercury | Hg (ppm) | 0.033 | 0.007 | 0.020 | 0.055 |
| Magnesium | Mg (wt%) | 0.222 | 0.059 | 0.128 | 0.553 |
| Manganese | Mn (ppm) | 705.840 | 187.402 | 302.187 | 1139.350 |
| Sodium | Na (wt%) | 0.471 | 0.223 | 0.094 | 1.737 |
| Phosphorus | P (wt%) | 0.036 | 0.010 | 0.020 | 0.066 |
| Lead | Pb (ppm) | 31.636 | 5.677 | 8.082 | 46.360 |
| Selenium | Se (ppm) | 0.185 | 0.050 | 0.104 | 0.382 |
| Titanium | Ti (wt%) | 0.832 | 0.121 | 0.476 | 1.142 |
| Zinc | Zn (ppm) | 51.358 | 10.475 | 28.864 | 80.655 |