| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.090 | 0.372 | 0.324 | 2.715 |
| Arsenic | As (ppm) | 1.489 | 0.440 | 0.667 | 3.240 |
| Calcium | Ca (wt%) | 0.033 | 0.024 | 0.008 | 0.131 |
| Copper | Cu (ppm) | 2.447 | 0.821 | 1.155 | 5.833 |
| Iron | Fe (wt%) | 0.510 | 0.168 | 0.136 | 0.976 |
| Mercury | Hg (ppm) | 0.013 | 0.005 | 0.010 | 0.048 |
| Magnesium | Mg (wt%) | 0.021 | 0.009 | 0.005 | 0.054 |
| Manganese | Mn (ppm) | 81.382 | 40.725 | 24.549 | 244.244 |
| Sodium | Na (wt%) | 0.027 | 0.022 | 0.004 | 0.111 |
| Phosphorus | P (wt%) | 0.015 | 0.004 | 0.006 | 0.039 |
| Lead | Pb (ppm) | 14.565 | 3.616 | 6.386 | 24.194 |
| Selenium | Se (ppm) | 0.173 | 0.050 | 0.100 | 0.485 |
| Titanium | Ti (wt%) | 0.358 | 0.075 | 0.169 | 0.578 |
| Zinc | Zn (ppm) | 10.441 | 3.486 | 3.840 | 25.383 |