| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.086 | 0.463 | 4.621 | 7.364 |
| Arsenic | As (ppm) | 6.561 | 1.771 | 1.884 | 12.478 |
| Calcium | Ca (wt%) | 1.008 | 0.569 | 0.222 | 2.534 |
| Copper | Cu (ppm) | 49.015 | 87.365 | 1.389 | 670.991 |
| Iron | Fe (wt%) | 3.506 | 0.323 | 2.394 | 4.276 |
| Mercury | Hg (ppm) | 0.067 | 0.019 | 0.040 | 0.167 |
| Magnesium | Mg (wt%) | 0.874 | 0.237 | 0.465 | 1.496 |
| Manganese | Mn (ppm) | 1296.050 | 499.403 | 360.426 | 3722.710 |
| Sodium | Na (wt%) | 1.043 | 0.096 | 0.819 | 1.460 |
| Phosphorus | P (wt%) | 0.063 | 0.012 | 0.031 | 0.099 |
| Lead | Pb (ppm) | 55.141 | 38.942 | 16.238 | 318.805 |
| Selenium | Se (ppm) | 0.402 | 0.341 | 0.104 | 2.680 |
| Titanium | Ti (wt%) | 0.438 | 0.097 | 0.285 | 0.758 |
| Zinc | Zn (ppm) | 132.607 | 95.056 | 72.857 | 803.403 |