| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.127 | 0.530 | 0.342 | 3.714 |
| Arsenic | As (ppm) | 2.573 | 1.073 | 0.346 | 10.395 |
| Calcium | Ca (wt%) | 0.036 | 0.018 | 0.006 | 0.104 |
| Copper | Cu (ppm) | 3.018 | 0.889 | 1.102 | 7.087 |
| Iron | Fe (wt%) | 0.973 | 0.387 | 0.402 | 3.481 |
| Mercury | Hg (ppm) | 0.015 | 0.005 | 0.010 | 0.049 |
| Magnesium | Mg (wt%) | 0.032 | 0.012 | 0.011 | 0.089 |
| Manganese | Mn (ppm) | 237.721 | 147.909 | 68.706 | 1099.870 |
| Sodium | Na (wt%) | 0.020 | 0.011 | 0.004 | 0.050 |
| Phosphorus | P (wt%) | 0.017 | 0.006 | 0.006 | 0.042 |
| Lead | Pb (ppm) | 13.510 | 4.779 | 2.555 | 33.241 |
| Selenium | Se (ppm) | 0.164 | 0.056 | 0.100 | 0.542 |
| Titanium | Ti (wt%) | 0.438 | 0.070 | 0.229 | 0.645 |
| Zinc | Zn (ppm) | 12.851 | 4.034 | 5.313 | 33.253 |